Merge branch 'main' of github.com:SigNoz/signoz into feat/trace-flamegraph

Fix - Handling for resource. prefix in quick filters (#10497 )
* fix: resource added in checkbox * fix: resource name handling * fix: added testcases * fix: updated for other types as well * fix: updated testcases * fix: pr comments
2026-03-11 07:52:04 +00:00 · 2026-03-11 12:24:06 +05:30 · 2026-03-11 06:31:53 +00:00 · 2026-03-11 05:10:47 +00:00 · 2026-03-11 04:58:18 +00:00 · 2026-03-11 03:31:10 +05:30
56 changed files with 4415 additions and 326 deletions
--- a/.devenv/docker/clickhouse/compose.yaml
+++ b/.devenv/docker/clickhouse/compose.yaml
@@ -1,22 +1,4 @@
 services:
-  init-clickhouse:
-    image: clickhouse/clickhouse-server:25.5.6
-    container_name: init-clickhouse
-    command:
-      - bash
-      - -c
-      - |
-        version="v0.0.1"
-        node_os=$$(uname -s | tr '[:upper:]' '[:lower:]')
-        node_arch=$$(uname -m | sed s/aarch64/arm64/ | sed s/x86_64/amd64/)
-        echo "Fetching histogram-binary for $${node_os}/$${node_arch}"
-        cd /tmp
-        wget -O histogram-quantile.tar.gz "https://github.com/SigNoz/signoz/releases/download/histogram-quantile%2F$${version}/histogram-quantile_$${node_os}_$${node_arch}.tar.gz"
-        tar -xvzf histogram-quantile.tar.gz
-        mv histogram-quantile /var/lib/clickhouse/user_scripts/histogramQuantile
-    restart: on-failure
-    volumes:
-      - ${PWD}/fs/tmp/var/lib/clickhouse/user_scripts/:/var/lib/clickhouse/user_scripts/
  clickhouse:
    image: clickhouse/clickhouse-server:25.5.6
    container_name: clickhouse
@@ -25,7 +7,6 @@ services:
      - ${PWD}/fs/etc/clickhouse-server/users.d/users.xml:/etc/clickhouse-server/users.d/users.xml
      - ${PWD}/fs/tmp/var/lib/clickhouse/:/var/lib/clickhouse/
      - ${PWD}/fs/tmp/var/lib/clickhouse/user_scripts/:/var/lib/clickhouse/user_scripts/
-      - ${PWD}/../../../deploy/common/clickhouse/custom-function.xml:/etc/clickhouse-server/custom-function.xml
    ports:
      - '127.0.0.1:8123:8123'
      - '127.0.0.1:9000:9000'
@@ -41,10 +22,7 @@ services:
      timeout: 5s
      retries: 3
    depends_on:
-      init-clickhouse:
-        condition: service_completed_successfully
-      zookeeper:
-        condition: service_healthy
+      - zookeeper
    environment:
      - CLICKHOUSE_SKIP_USER_SETUP=1
  zookeeper:
--- a/.devenv/docker/clickhouse/fs/etc/clickhouse-server/config.d/config.xml
+++ b/.devenv/docker/clickhouse/fs/etc/clickhouse-server/config.d/config.xml
@@ -44,5 +44,4 @@
        <shard>01</shard>
        <replica>01</replica>
    </macros>
-    <user_defined_executable_functions_config>*function.xml</user_defined_executable_functions_config>
 </clickhouse>
--- a/docs/contributing/development.md
+++ b/docs/contributing/development.md
@@ -100,7 +100,7 @@ This command:

 3. Create a `.env` file in this directory:
   ```env
-   FRONTEND_API_ENDPOINT=http://localhost:8080
+   VITE_FRONTEND_API_ENDPOINT=http://localhost:8080
   ```

 4. Start the development server:
--- a/docs/contributing/onboarding.md
+++ b/docs/contributing/onboarding.md
@@ -273,6 +273,7 @@ Options can be simple (direct link) or nested (with another question):
 - Place logo files in `public/Logos/`
 - Use SVG format
 - Reference as `"/Logos/your-logo.svg"`
+- **Optimize new SVGs**: Run any newly downloaded SVGs through an optimizer like [SVGOMG (svgo)](https://svgomg.net/) or use `npx svgo public/Logos/your-logo.svg` to minimise their size before committing.

 ### 4. Links

--- a/frontend/example.env
+++ b/frontend/example.env
@@ -1,6 +1,6 @@
 NODE_ENV="development"
 BUNDLE_ANALYSER="true"
-VITE_FRONTEND_API_ENDPOINT="http://localhost:8080/"
+VITE_FRONTEND_API_ENDPOINT="http://localhost:8080"
 VITE_PYLON_APP_ID="pylon-app-id"
 VITE_APPCUES_APP_ID="appcess-app-id"
 VITE_PYLON_IDENTITY_SECRET="pylon-identity-secret"
--- a/frontend/jest.config.ts
+++ b/frontend/jest.config.ts
@@ -39,7 +39,7 @@ const config: Config.InitialOptions = {
 		'^.+\\.(js|jsx)$': 'babel-jest',
 	},
 	transformIgnorePatterns: [
-		'node_modules/(?!(lodash-es|react-dnd|core-dnd|@react-dnd|dnd-core|react-dnd-html5-backend|axios|@signozhq/design-tokens|@signozhq/table|@signozhq/calendar|@signozhq/input|@signozhq/popover|@signozhq/button|@signozhq/sonner|@signozhq/*|date-fns|d3-interpolate|d3-color|api|@codemirror|@lezer|@marijn|@grafana)/)',
+		'node_modules/(?!(lodash-es|react-dnd|core-dnd|@react-dnd|dnd-core|react-dnd-html5-backend|axios|@signozhq/design-tokens|@signozhq/table|@signozhq/calendar|@signozhq/input|@signozhq/popover|@signozhq/button|@signozhq/sonner|@signozhq/*|date-fns|d3-interpolate|d3-color|api|@codemirror|@lezer|@marijn|@grafana|nuqs)/)',
 	],
 	setupFilesAfterEnv: ['<rootDir>/jest.setup.ts'],
 	testPathIgnorePatterns: ['/node_modules/', '/public/'],
--- a/frontend/public/Logos/deno.svg
+++ b/frontend/public/Logos/deno.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#fff" viewBox="0 0 24 24"><title>Deno</title><path d="M1.105 18.02A11.9 11.9 0 0 1 0 12.985q0-.698.078-1.376a12 12 0 0 1 .231-1.34A12 12 0 0 1 4.025 4.02a12 12 0 0 1 5.46-2.771 12 12 0 0 1 3.428-.23c1.452.112 2.825.477 4.077 1.05a12 12 0 0 1 2.78 1.774 12.02 12.02 0 0 1 4.053 7.078A12 12 0 0 1 24 12.985q0 .454-.036.914a12 12 0 0 1-.728 3.305 12 12 0 0 1-2.38 3.875c-1.33 1.357-3.02 1.962-4.43 1.936a4.4 4.4 0 0 1-2.724-1.024c-.99-.853-1.391-1.83-1.53-2.919a5 5 0 0 1 .128-1.518c.105-.38.37-1.116.76-1.437-.455-.197-1.04-.624-1.226-.829-.045-.05-.04-.13 0-.183a.155.155 0 0 1 .177-.053c.392.134.869.267 1.372.35.66.111 1.484.25 2.317.292 2.03.1 4.153-.813 4.812-2.627s.403-3.609-1.96-4.685-3.454-2.356-5.363-3.128c-1.247-.505-2.636-.205-4.06.582-3.838 2.121-7.277 8.822-5.69 15.032a.191.191 0 0 1-.315.19 12 12 0 0 1-1.25-1.634 12 12 0 0 1-.769-1.404M11.57 6.087c.649-.051 1.214.501 1.31 1.236.13.979-.228 1.99-1.41 2.013-1.01.02-1.315-.997-1.248-1.614.066-.616.574-1.575 1.35-1.635"/></svg>
--- a/frontend/public/Logos/haystack.svg
+++ b/frontend/public/Logos/haystack.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#fff" viewBox="0 0 24 24"><title>Haystack</title><path d="M2.008 0C.9 0 0 .9 0 2.008v19.984C0 23.1.9 24 2.008 24h19.984C23.1 24 24 23.1 24 21.992V2.008C24 .9 23.1 0 21.992 0Zm9.963 3.84c3.43 0 6.21 2.763 6.21 6.17v6.488a.27.27 0 0 1-.27.268 2.423 2.423 0 0 1-2.43-2.414V10.01c0-1.927-1.572-3.488-3.51-3.488S8.547 8.085 8.547 10.01v1.608a.263.263 0 0 0 .259.268h1.54a.27.27 0 0 0 .275-.263V9.945c0-.74.604-1.341 1.35-1.341s1.35.6 1.35 1.341V20.03a.275.275 0 0 1-.28.268 2.41 2.41 0 0 1-2.42-2.404v-3.23a.275.275 0 0 0-.276-.269H8.811a.264.264 0 0 0-.264.263v1.08c0 1.333-1.175 2.414-2.517 2.414a.27.27 0 0 1-.27-.268v-7.872c0-3.408 2.78-6.171 6.21-6.171"/></svg>
--- a/frontend/public/Logos/huggingface.svg
+++ b/frontend/public/Logos/huggingface.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 95 88" fill="none"><path fill="#ffd21e" d="M47.21 76.5a34.75 34.75 0 1 0 0-69.5 34.75 34.75 0 0 0 0 69.5"/><path fill="#ff9d0b" d="M81.96 41.75a34.75 34.75 0 1 0-69.5 0 34.75 34.75 0 0 0 69.5 0m-73.5 0a38.75 38.75 0 1 1 77.5 0 38.75 38.75 0 0 1-77.5 0"/><path fill="#3a3b45" d="M58.5 32.3c1.28.44 1.78 3.06 3.07 2.38a5 5 0 1 0-6.76-2.07c.61 1.15 2.55-.72 3.7-.32Zm-23.55 0c-1.28.44-1.79 3.06-3.07 2.38a5 5 0 1 1 6.76-2.07c-.61 1.15-2.56-.72-3.7-.32Z"/><path fill="#ff323d" d="M46.96 56.29c9.83 0 13-8.76 13-13.26 0-2.34-1.57-1.6-4.09-.36-2.33 1.15-5.46 2.74-8.9 2.74-7.19 0-13-6.88-13-2.38s3.16 13.26 13 13.26Z"/><path fill="#3a3b45" fill-rule="evenodd" d="M39.43 54a8.7 8.7 0 0 1 5.3-4.49c.4-.12.81.57 1.24 1.28.4.68.82 1.37 1.24 1.37.45 0 .9-.68 1.33-1.35.45-.7.89-1.38 1.32-1.25a8.6 8.6 0 0 1 5 4.17c3.73-2.94 5.1-7.74 5.1-10.7 0-2.34-1.57-1.6-4.09-.36l-.14.07c-2.31 1.15-5.39 2.67-8.77 2.67s-6.45-1.52-8.77-2.67c-2.6-1.29-4.23-2.1-4.23.29 0 3.05 1.46 8.06 5.47 10.97" clip-rule="evenodd"/><path fill="#ff9d0b" d="M70.71 37a3.25 3.25 0 1 0 0-6.5 3.25 3.25 0 0 0 0 6.5m-46.5 0a3.25 3.25 0 1 0 0-6.5 3.25 3.25 0 0 0 0 6.5m-6.69 11c-1.62 0-3.06.66-4.07 1.87a5.97 5.97 0 0 0-1.33 3.76 7 7 0 0 0-1.94-.3c-1.55 0-2.95.59-3.94 1.66a5.8 5.8 0 0 0-.8 7 5.3 5.3 0 0 0-1.79 2.82c-.24.9-.48 2.8.8 4.74a5.22 5.22 0 0 0-.37 5.02c1.02 2.32 3.57 4.14 8.52 6.1 3.07 1.22 5.89 2 5.91 2.01a44.3 44.3 0 0 0 10.93 1.6c5.86 0 10.05-1.8 12.46-5.34 3.88-5.69 3.33-10.9-1.7-15.92-2.77-2.78-4.62-6.87-5-7.77-.78-2.66-2.84-5.62-6.25-5.62a5.7 5.7 0 0 0-4.6 2.46c-1-1.26-1.98-2.25-2.86-2.82A7.4 7.4 0 0 0 17.52 48m0 4c.51 0 1.14.22 1.82.65 2.14 1.36 6.25 8.43 7.76 11.18.5.92 1.37 1.31 2.14 1.31 1.55 0 2.75-1.53.15-3.48-3.92-2.93-2.55-7.72-.68-8.01.08-.02.17-.02.24-.02 1.7 0 2.45 2.93 2.45 2.93s2.2 5.52 5.98 9.3c3.77 3.77 3.97 6.8 1.22 10.83-1.88 2.75-5.47 3.58-9.16 3.58-3.81 0-7.73-.9-9.92-1.46-.11-.03-13.45-3.8-11.76-7 .28-.54.75-.76 1.34-.76 2.38 0 6.7 3.54 8.57 3.54.41 0 .7-.17.83-.6.79-2.85-12.06-4.05-10.98-8.17.2-.73.71-1.02 1.44-1.02 3.14 0 10.2 5.53 11.68 5.53.11 0 .2-.03.24-.1.74-1.2.33-2.04-4.9-5.2-5.21-3.16-8.88-5.06-6.8-7.33.24-.26.58-.38 1-.38 3.17 0 10.66 6.82 10.66 6.82s2.02 2.1 3.25 2.1c.28 0 .52-.1.68-.38.86-1.46-8.06-8.22-8.56-11.01-.34-1.9.24-2.85 1.31-2.85"/><path fill="#ffd21e" d="M38.6 76.69c2.75-4.04 2.55-7.07-1.22-10.84-3.78-3.77-5.98-9.3-5.98-9.3s-.82-3.2-2.69-2.9-3.24 5.08.68 8.01c3.91 2.93-.78 4.92-2.29 2.17-1.5-2.75-5.62-9.82-7.76-11.18-2.13-1.35-3.63-.6-3.13 2.2.5 2.79 9.43 9.55 8.56 11-.87 1.47-3.93-1.71-3.93-1.71s-9.57-8.71-11.66-6.44c-2.08 2.27 1.59 4.17 6.8 7.33 5.23 3.16 5.64 4 4.9 5.2-.75 1.2-12.28-8.53-13.36-4.4-1.08 4.11 11.77 5.3 10.98 8.15-.8 2.85-9.06-5.38-10.74-2.18-1.7 3.21 11.65 6.98 11.76 7.01 4.3 1.12 15.25 3.49 19.08-2.12"/><path fill="#ff9d0b" d="M77.4 48c1.62 0 3.07.66 4.07 1.87a5.97 5.97 0 0 1 1.33 3.76 7 7 0 0 1 1.95-.3c1.55 0 2.95.59 3.94 1.66a5.8 5.8 0 0 1 .8 7 5.3 5.3 0 0 1 1.78 2.82c.24.9.48 2.8-.8 4.74a5.22 5.22 0 0 1 .37 5.02c-1.02 2.32-3.57 4.14-8.51 6.1-3.08 1.22-5.9 2-5.92 2.01a44.3 44.3 0 0 1-10.93 1.6c-5.86 0-10.05-1.8-12.46-5.34-3.88-5.69-3.33-10.9 1.7-15.92 2.78-2.78 4.63-6.87 5.01-7.77.78-2.66 2.83-5.62 6.24-5.62a5.7 5.7 0 0 1 4.6 2.46c1-1.26 1.98-2.25 2.87-2.82A7.4 7.4 0 0 1 77.4 48m0 4c-.51 0-1.13.22-1.82.65-2.13 1.36-6.25 8.43-7.76 11.18a2.43 2.43 0 0 1-2.14 1.31c-1.54 0-2.75-1.53-.14-3.48 3.91-2.93 2.54-7.72.67-8.01a1.5 1.5 0 0 0-.24-.02c-1.7 0-2.45 2.93-2.45 2.93s-2.2 5.52-5.97 9.3c-3.78 3.77-3.98 6.8-1.22 10.83 1.87 2.75 5.47 3.58 9.15 3.58 3.82 0 7.73-.9 9.93-1.46.1-.03 13.45-3.8 11.76-7-.29-.54-.75-.76-1.34-.76-2.38 0-6.71 3.54-8.57 3.54-.42 0-.71-.17-.83-.6-.8-2.85 12.05-4.05 10.97-8.17-.19-.73-.7-1.02-1.44-1.02-3.14 0-10.2 5.53-11.68 5.53-.1 0-.19-.03-.23-.1-.74-1.2-.34-2.04 4.88-5.2 5.23-3.16 8.9-5.06 6.8-7.33-.23-.26-.57-.38-.98-.38-3.18 0-10.67 6.82-10.67 6.82s-2.02 2.1-3.24 2.1a.74.74 0 0 1-.68-.38c-.87-1.46 8.05-8.22 8.55-11.01.34-1.9-.24-2.85-1.31-2.85"/><path fill="#ffd21e" d="M56.33 76.69c-2.75-4.04-2.56-7.07 1.22-10.84 3.77-3.77 5.97-9.3 5.97-9.3s.82-3.2 2.7-2.9c1.86.3 3.23 5.08-.68 8.01-3.92 2.93.78 4.92 2.28 2.17 1.51-2.75 5.63-9.82 7.76-11.18 2.13-1.35 3.64-.6 3.13 2.2-.5 2.79-9.42 9.55-8.55 11 .86 1.47 3.92-1.71 3.92-1.71s9.58-8.71 11.66-6.44-1.58 4.17-6.8 7.33c-5.23 3.16-5.63 4-4.9 5.2.75 1.2 12.28-8.53 13.36-4.4 1.08 4.11-11.76 5.3-10.97 8.15.8 2.85 9.05-5.38 10.74-2.18 1.69 3.21-11.65 6.98-11.76 7.01-4.31 1.12-15.26 3.49-19.08-2.12"/></svg>
--- a/frontend/public/Logos/nvidia-dcgm.svg
+++ b/frontend/public/Logos/nvidia-dcgm.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#76b900" viewBox="0 0 24 24"><title>NVIDIA</title><path d="M8.948 8.798v-1.43a7 7 0 0 1 .424-.018c3.922-.124 6.493 3.374 6.493 3.374s-2.774 3.851-5.75 3.851a3.7 3.7 0 0 1-1.158-.185v-4.346c1.528.185 1.837.857 2.747 2.385l2.04-1.714s-1.492-1.952-4-1.952a6 6 0 0 0-.796.035m0-4.735v2.138l.424-.027c5.45-.185 9.01 4.47 9.01 4.47s-4.08 4.964-8.33 4.964a6.5 6.5 0 0 1-1.095-.097v1.325c.3.035.61.062.91.062 3.957 0 6.82-2.023 9.593-4.408.459.371 2.34 1.263 2.73 1.652-2.633 2.208-8.772 3.984-12.253 3.984-.335 0-.653-.018-.971-.053v1.864H24V4.063zm0 10.326v1.131c-3.657-.654-4.673-4.46-4.673-4.46s1.758-1.944 4.673-2.262v1.237H8.94c-1.528-.186-2.73 1.245-2.73 1.245s.68 2.412 2.739 3.11M2.456 10.9s2.164-3.197 6.5-3.533V6.201C4.153 6.59 0 10.653 0 10.653s2.35 6.802 8.948 7.42v-1.237c-4.84-.6-6.492-5.936-6.492-5.936"/></svg>
--- a/frontend/public/Logos/ollama.svg
+++ b/frontend/public/Logos/ollama.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#fff" viewBox="0 0 24 24"><title>Ollama</title><path d="M16.361 10.26a.9.9 0 0 0-.558.47l-.072.148.001.207c0 .193.004.217.059.353.076.193.152.312.291.448.24.238.51.3.872.205a.86.86 0 0 0 .517-.436.75.75 0 0 0 .08-.498c-.064-.453-.33-.782-.724-.897a1.1 1.1 0 0 0-.466 0m-9.203.005c-.305.096-.533.32-.65.639a1.2 1.2 0 0 0-.06.52c.057.309.31.59.598.667.362.095.632.033.872-.205.14-.136.215-.255.291-.448.055-.136.059-.16.059-.353l.001-.207-.072-.148a.9.9 0 0 0-.565-.472 1 1 0 0 0-.474.007m4.184 2c-.131.071-.223.25-.195.383.031.143.157.288.353.407.105.063.112.072.117.136.004.038-.01.146-.029.243-.02.094-.036.194-.036.222.002.074.07.195.143.253.064.052.076.054.255.059.164.005.198.001.264-.03.169-.082.212-.234.15-.525-.052-.243-.042-.28.087-.355.137-.08.281-.219.324-.314a.365.365 0 0 0-.175-.48.4.4 0 0 0-.181-.033c-.126 0-.207.03-.355.124l-.085.053-.053-.032c-.219-.13-.259-.145-.391-.143a.4.4 0 0 0-.193.032m.39-2.195c-.373.036-.475.05-.654.086a4.5 4.5 0 0 0-.951.328c-.94.46-1.589 1.226-1.787 2.114-.04.176-.045.234-.045.53 0 .294.005.357.043.524.264 1.16 1.332 2.017 2.714 2.173.3.033 1.596.033 1.896 0 1.11-.125 2.064-.727 2.493-1.571.114-.226.169-.372.22-.602.039-.167.044-.23.044-.523 0-.297-.005-.355-.045-.531-.288-1.29-1.539-2.304-3.072-2.497a7 7 0 0 0-.855-.031zm.645.937a3.3 3.3 0 0 1 1.44.514c.223.148.537.458.671.662.166.251.26.508.303.82.02.143.01.251-.043.482-.08.345-.332.705-.672.957a3 3 0 0 1-.689.348c-.382.122-.632.144-1.525.138-.582-.006-.686-.01-.853-.042q-.856-.16-1.35-.68c-.264-.28-.385-.535-.45-.946-.03-.192.025-.509.137-.776.136-.326.488-.73.836-.963.403-.269.934-.46 1.422-.512.187-.02.586-.02.773-.002m-5.503-11a1.65 1.65 0 0 0-.683.298C5.617.74 5.173 1.666 4.985 2.819c-.07.436-.119 1.04-.119 1.503 0 .544.064 1.24.155 1.721.02.107.031.202.023.208l-.187.152a5.3 5.3 0 0 0-.949 1.02 5.5 5.5 0 0 0-.94 2.339 6.6 6.6 0 0 0-.023 1.357c.091.78.325 1.438.727 2.04l.13.195-.037.064c-.269.452-.498 1.105-.605 1.732-.084.496-.095.629-.095 1.294 0 .67.009.803.088 1.266.095.555.288 1.143.503 1.534.071.128.243.393.264.407.007.003-.014.067-.046.141a7.4 7.4 0 0 0-.548 1.873 5 5 0 0 0-.071.991c0 .56.031.832.148 1.279L3.42 24h1.478l-.05-.091c-.297-.552-.325-1.575-.068-2.597.117-.472.25-.819.498-1.296l.148-.29v-.177c0-.165-.003-.184-.057-.293a.9.9 0 0 0-.194-.25 1.7 1.7 0 0 1-.385-.543c-.424-.92-.506-2.286-.208-3.451.124-.486.329-.918.544-1.154a.8.8 0 0 0 .223-.531c0-.195-.07-.355-.224-.522a3.14 3.14 0 0 1-.817-1.729c-.14-.96.114-2.005.69-2.834.563-.814 1.353-1.336 2.237-1.475.199-.033.57-.028.776.01.226.04.367.028.512-.041.179-.085.268-.19.374-.431.093-.215.165-.333.36-.576.234-.29.46-.489.822-.729.413-.27.884-.467 1.352-.561.17-.035.25-.04.569-.04s.398.005.569.04a4.07 4.07 0 0 1 1.914.997c.117.109.398.457.488.602.034.057.095.177.132.267.105.241.195.346.374.43.14.068.286.082.503.045.343-.058.607-.053.943.016 1.144.23 2.14 1.173 2.581 2.437.385 1.108.276 2.267-.296 3.153-.097.15-.193.27-.333.419-.301.322-.301.722-.001 1.053.493.539.801 1.866.708 3.036-.062.772-.26 1.463-.533 1.854a2 2 0 0 1-.224.258.9.9 0 0 0-.194.25c-.054.109-.057.128-.057.293v.178l.148.29c.248.476.38.823.498 1.295.253 1.008.231 2.01-.059 2.581a1 1 0 0 0-.044.098c0 .006.329.009.732.009h.73l.02-.074.036-.134c.019-.076.057-.3.088-.516a9 9 0 0 0 0-1.258c-.11-.875-.295-1.57-.597-2.226-.032-.074-.053-.138-.046-.141a1.4 1.4 0 0 0 .108-.152c.376-.569.607-1.284.724-2.228.031-.26.031-1.378 0-1.628-.083-.645-.182-1.082-.348-1.525a6 6 0 0 0-.329-.7l-.038-.064.131-.194c.402-.604.636-1.262.727-2.04a6.6 6.6 0 0 0-.024-1.358 5.5 5.5 0 0 0-.939-2.339 5.3 5.3 0 0 0-.95-1.02l-.186-.152a.7.7 0 0 1 .023-.208c.208-1.087.201-2.443-.017-3.503-.19-.924-.535-1.658-.98-2.082-.354-.338-.716-.482-1.15-.455-.996.059-1.8 1.205-2.116 3.01a7 7 0 0 0-.097.726c0 .036-.007.066-.015.066a1 1 0 0 1-.149-.078A4.86 4.86 0 0 0 12 3.03c-.832 0-1.687.243-2.456.698a1 1 0 0 1-.148.078c-.008 0-.015-.03-.015-.066a7 7 0 0 0-.097-.725C8.997 1.392 8.337.319 7.46.048a2 2 0 0 0-.585-.041Zm.293 1.402c.248.197.523.759.682 1.388.03.113.06.244.069.292.007.047.026.152.041.233.067.365.098.76.102 1.24l.002.475-.12.175-.118.178h-.278c-.324 0-.646.041-.954.124l-.238.06c-.033.007-.038-.003-.057-.144a8.4 8.4 0 0 1 .016-2.323c.124-.788.413-1.501.696-1.711.067-.05.079-.049.157.013m9.825-.012c.17.126.358.46.498.888.28.854.36 2.028.212 3.145-.019.14-.024.151-.057.144l-.238-.06a3.7 3.7 0 0 0-.954-.124h-.278l-.119-.178-.119-.175.002-.474c.004-.669.066-1.19.214-1.772.157-.623.434-1.185.68-1.382.078-.062.09-.063.159-.012"/></svg>
--- a/frontend/public/Logos/openrouter.svg
+++ b/frontend/public/Logos/openrouter.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="#fff" viewBox="0 0 24 24"><title>OpenRouter</title><path d="M16.778 1.844v1.919q-.569-.026-1.138-.032-.708-.008-1.415.037c-1.93.126-4.023.728-6.149 2.237-2.911 2.066-2.731 1.95-4.14 2.75-.396.223-1.342.574-2.185.798-.841.225-1.753.333-1.751.333v4.229s.768.108 1.61.333c.842.224 1.789.575 2.185.799 1.41.798 1.228.683 4.14 2.75 2.126 1.509 4.22 2.11 6.148 2.236.88.058 1.716.041 2.555.005v1.918l7.222-4.168-7.222-4.17v2.176c-.86.038-1.611.065-2.278.021-1.364-.09-2.417-.357-3.979-1.465-2.244-1.593-2.866-2.027-3.68-2.508.889-.518 1.449-.906 3.822-2.59 1.56-1.109 2.614-1.377 3.978-1.466.667-.044 1.418-.017 2.278.02v2.176L24 6.014Z"/></svg>
--- a/frontend/public/Logos/prometheus.svg
+++ b/frontend/public/Logos/prometheus.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="-3.94 -1.44 438.62 432.87"><path fill="#e75225" d="M215.926 7.068c115.684.024 210.638 93.784 210.493 207.844-.148 115.793-94.713 208.252-212.912 208.169C97.95 423 4.52 329.143 4.601 213.221 4.68 99.867 99.833 7.044 215.926 7.068m-63.947 73.001c2.652 12.978.076 25.082-3.846 36.988-2.716 8.244-6.47 16.183-8.711 24.539-3.694 13.769-7.885 27.619-9.422 41.701-2.21 20.25 5.795 38.086 19.493 55.822L86.527 225.94c.11 1.978-.007 2.727.21 3.361 5.968 17.43 16.471 32.115 28.243 45.957 1.246 1.465 4.082 2.217 6.182 2.221 62.782.115 125.565.109 188.347.028 1.948-.003 4.546-.369 5.741-1.618 13.456-14.063 23.746-30.079 30.179-50.257l-66.658 12.976c4.397-8.567 9.417-16.1 12.302-24.377 9.869-28.315 5.779-55.69-8.387-81.509-11.368-20.72-21.854-41.349-16.183-66.32-12.005 11.786-16.615 26.79-19.541 42.253-2.882 15.23-4.58 30.684-6.811 46.136-.317-.467-.728-.811-.792-1.212-.258-1.621-.499-3.255-.587-4.893-1.355-25.31-6.328-49.696-16.823-72.987-6.178-13.71-12.99-27.727-6.622-44.081-4.31 2.259-8.205 4.505-10.997 7.711-8.333 9.569-11.779 21.062-12.666 33.645-.757 10.75-1.796 21.552-3.801 32.123-2.107 11.109-5.448 21.998-12.956 32.209-3.033-21.81-3.37-43.38-22.928-57.237m161.877 216.523H116.942v34.007h196.914zm-157.871 51.575c-.163 28.317 28.851 49.414 64.709 47.883 29.716-1.269 56.016-24.51 53.755-47.883z"/></svg>
--- a/frontend/public/Logos/slurm.svg
+++ b/frontend/public/Logos/slurm.svg
--- a/frontend/public/Logos/statsd.svg
+++ b/frontend/public/Logos/statsd.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xml:space="preserve" viewBox="0 0 122.88 103.53"><path d="M5.47 0H117.4c3.01 0 5.47 2.46 5.47 5.47v92.58c0 3.01-2.46 5.47-5.47 5.47H5.47c-3.01 0-5.47-2.46-5.47-5.47V5.47C0 2.46 2.46 0 5.47 0m26.37 38.55 17.79 18.42 2.14 2.13-2.12 2.16-17.97 19.05-5.07-5 15.85-16.15L26.81 43.6zM94.1 79.41H54.69v-6.84H94.1zM38.19 9.83c3.19 0 5.78 2.59 5.78 5.78s-2.59 5.78-5.78 5.78-5.78-2.59-5.78-5.78S35 9.83 38.19 9.83m-19.24 0c3.19 0 5.78 2.59 5.78 5.78s-2.59 5.78-5.78 5.78-5.78-2.59-5.78-5.78 2.58-5.78 5.78-5.78M7.49 5.41H115.4c1.15 0 2.09.94 2.09 2.09v18.32H5.4V7.5c0-1.15.94-2.09 2.09-2.09" style="fill-rule:evenodd;clip-rule:evenodd;fill:#1668dc"/></svg>
--- a/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/Checkbox.test.tsx
+++ b/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/Checkbox.test.tsx
@@ -361,6 +361,58 @@ describe('CheckboxFilter - User Flows', () => {
 		expect(filtersForServiceName).toHaveLength(0);
 	});

+	it('should match filter when query uses resource. prefix (resource.service.name matches service.name)', async () => {
+		// Filter config uses unprefixed key (service.name)
+		// Query has filter with resource. prefix (resource.service.name)
+		// Checkbox should recognize the match and show checked state
+		mockUseQueryBuilder.mockReturnValue({
+			lastUsedQuery: 0,
+			currentQuery: {
+				builder: {
+					queryData: [
+						{
+							filters: {
+								items: [
+									{
+										key: {
+											key: 'resource.service.name',
+											dataType: DataTypes.String,
+											type: 'resource',
+										},
+										op: 'in',
+										value: [OTEL_DEMO],
+									},
+								],
+								op: 'AND',
+							},
+						},
+					],
+				},
+			},
+			redirectWithQueryBuilderData: jest.fn(),
+		} as any);
+
+		const mockFilter = createMockFilter({ defaultOpen: false });
+
+		render(
+			<CheckboxFilter
+				filter={mockFilter}
+				source={QuickFiltersSource.LOGS_EXPLORER}
+			/>,
+		);
+
+		// Filter should auto-open because it has active filters (key match via prefix stripping)
+		await waitFor(() => {
+			expect(screen.getByPlaceholderText('Filter values')).toBeInTheDocument();
+		});
+
+		// otel-demo should be checked (filter uses resource.service.name IN [otel-demo])
+		// Checked items are sorted to the top, so otel-demo is first
+		const checkboxes = screen.getAllByRole('checkbox');
+		expect(checkboxes[0]).toBeChecked();
+		expect(screen.getByText(OTEL_DEMO)).toBeInTheDocument();
+	});
+
 	it('should extend an existing IN filter when checking an additional value', async () => {
 		const redirectWithQueryBuilderData = jest.fn();

--- a/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/Checkbox.tsx
+++ b/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/Checkbox.tsx
@@ -18,7 +18,7 @@ import { useGetAggregateValues } from 'hooks/queryBuilder/useGetAggregateValues'
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import { useGetQueryKeyValueSuggestions } from 'hooks/querySuggestions/useGetQueryKeyValueSuggestions';
 import useDebouncedFn from 'hooks/useDebouncedFunction';
-import { cloneDeep, isArray, isEqual, isFunction } from 'lodash-es';
+import { cloneDeep, isArray, isFunction } from 'lodash-es';
 import { ChevronDown, ChevronRight } from 'lucide-react';
 import { DataTypes } from 'types/api/queryBuilder/queryAutocompleteResponse';
 import { Query, TagFilterItem } from 'types/api/queryBuilder/queryBuilderData';
@@ -26,6 +26,7 @@ import { DataSource } from 'types/common/queryBuilder';
 import { v4 as uuid } from 'uuid';

 import LogsQuickFilterEmptyState from './LogsQuickFilterEmptyState';
+import { isKeyMatch } from './utils';

 import './Checkbox.styles.scss';

@@ -84,7 +85,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 			currentQuery.builder.queryData?.[
 				activeQueryIndex
 			]?.filters?.items?.some((item) =>
-				isEqual(item.key?.key, filter.attributeKey.key),
+				isKeyMatch(item.key?.key, filter.attributeKey.key),
 			),
 		[currentQuery.builder.queryData, activeQueryIndex, filter.attributeKey.key],
 	);
@@ -189,7 +190,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 		const filterSync = currentQuery?.builder.queryData?.[
 			activeQueryIndex
 		]?.filters?.items.find((item) =>
-			isEqual(item.key?.key, filter.attributeKey.key),
+			isKeyMatch(item.key?.key, filter.attributeKey.key),
 		);

 		if (filterSync) {
@@ -236,7 +237,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 			(currentQuery?.builder?.queryData?.[
 				activeQueryIndex
 			]?.filters?.items?.filter((item) =>
-				isEqual(item.key?.key, filter.attributeKey.key),
+				isKeyMatch(item.key?.key, filter.attributeKey.key),
 			)?.length || 0) > 1,

 		[currentQuery?.builder?.queryData, activeQueryIndex, filter.attributeKey],
@@ -280,7 +281,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 						items:
 							idx === activeQueryIndex
 								? item.filters?.items?.filter(
-										(fil) => !isEqual(fil.key?.key, filter.attributeKey.key),
+										(fil) => !isKeyMatch(fil.key?.key, filter.attributeKey.key),
 								  ) || []
 								: [...(item.filters?.items || [])],
 						op: item.filters?.op || 'AND',
@@ -313,7 +314,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 					: 'Only'
 				: 'Only';
 			query.filters.items = query.filters.items.filter(
-				(q) => !isEqual(q.key?.key, filter.attributeKey.key),
+				(q) => !isKeyMatch(q.key?.key, filter.attributeKey.key),
 			);

 			if (query.filter?.expression) {
@@ -335,13 +336,13 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 		} else if (query?.filters?.items) {
 			if (
 				query.filters?.items?.some((item) =>
-					isEqual(item.key?.key, filter.attributeKey.key),
+					isKeyMatch(item.key?.key, filter.attributeKey.key),
 				)
 			) {
 				// if there is already a running filter for the current attribute key then
 				// we split the cases by which particular operator is present right now!
 				const currentFilter = query.filters?.items?.find((q) =>
-					isEqual(q.key?.key, filter.attributeKey.key),
+					isKeyMatch(q.key?.key, filter.attributeKey.key),
 				);
 				if (currentFilter) {
 					const runningOperator = currentFilter?.op;
@@ -356,7 +357,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										value: [...currentFilter.value, value],
 									};
 									query.filters.items = query.filters.items.map((item) => {
-										if (isEqual(item.key?.key, filter.attributeKey.key)) {
+										if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 											return newFilter;
 										}
 										return item;
@@ -368,7 +369,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										value: [currentFilter.value as string, value],
 									};
 									query.filters.items = query.filters.items.map((item) => {
-										if (isEqual(item.key?.key, filter.attributeKey.key)) {
+										if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 											return newFilter;
 										}
 										return item;
@@ -385,11 +386,11 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {

 									if (newFilter.value.length === 0) {
 										query.filters.items = query.filters.items.filter(
-											(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+											(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 										);
 									} else {
 										query.filters.items = query.filters.items.map((item) => {
-											if (isEqual(item.key?.key, filter.attributeKey.key)) {
+											if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 												return newFilter;
 											}
 											return item;
@@ -398,7 +399,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 								} else {
 									// if not an array remove the whole thing altogether!
 									query.filters.items = query.filters.items.filter(
-										(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+										(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 									);
 								}
 							}
@@ -414,7 +415,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										value: [...currentFilter.value, value],
 									};
 									query.filters.items = query.filters.items.map((item) => {
-										if (isEqual(item.key?.key, filter.attributeKey.key)) {
+										if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 											return newFilter;
 										}
 										return item;
@@ -426,7 +427,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										value: [currentFilter.value as string, value],
 									};
 									query.filters.items = query.filters.items.map((item) => {
-										if (isEqual(item.key?.key, filter.attributeKey.key)) {
+										if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 											return newFilter;
 										}
 										return item;
@@ -441,7 +442,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 									};
 									if (newFilter.value.length === 0) {
 										query.filters.items = query.filters.items.filter(
-											(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+											(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 										);
 										if (query.filter?.expression) {
 											query.filter.expression = removeKeysFromExpression(
@@ -451,7 +452,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										}
 									} else {
 										query.filters.items = query.filters.items.map((item) => {
-											if (isEqual(item.key?.key, filter.attributeKey.key)) {
+											if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 												return newFilter;
 											}
 											return item;
@@ -469,7 +470,7 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 										);
 									}
 									query.filters.items = query.filters.items.filter(
-										(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+										(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 									);
 								}
 							}
@@ -482,14 +483,14 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 									value: [currentFilter.value as string, value],
 								};
 								query.filters.items = query.filters.items.map((item) => {
-									if (isEqual(item.key?.key, filter.attributeKey.key)) {
+									if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 										return newFilter;
 									}
 									return item;
 								});
 							} else if (!checked) {
 								query.filters.items = query.filters.items.filter(
-									(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+									(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 								);
 							}
 							break;
@@ -501,14 +502,14 @@ export default function CheckboxFilter(props: ICheckboxProps): JSX.Element {
 									value: [currentFilter.value as string, value],
 								};
 								query.filters.items = query.filters.items.map((item) => {
-									if (isEqual(item.key?.key, filter.attributeKey.key)) {
+									if (isKeyMatch(item.key?.key, filter.attributeKey.key)) {
 										return newFilter;
 									}
 									return item;
 								});
 							} else if (checked) {
 								query.filters.items = query.filters.items.filter(
-									(item) => !isEqual(item.key?.key, filter.attributeKey.key),
+									(item) => !isKeyMatch(item.key?.key, filter.attributeKey.key),
 								);
 							}
 							break;
--- a/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/utils.ts
+++ b/frontend/src/components/QuickFilters/FilterRenderers/Checkbox/utils.ts
@@ -0,0 +1,41 @@
+/**
+ * These prefixes are added to attribute keys based on their context.
+ */
+export const FIELD_CONTEXT_PREFIXES = [
+	'metric',
+	'log',
+	'span',
+	'trace',
+	'resource',
+	'scope',
+	'attribute',
+	'event',
+	'body',
+];
+
+/**
+ * Removes the field context prefix from a key to get the base key name.
+ * Example: 'resource.service.name' -> 'service.name'
+ * Example: 'attribute.http.method' -> 'http.method'
+ */
+export function getKeyWithoutPrefix(key: string | undefined): string {
+	if (!key) {
+		return '';
+	}
+	const prefixPattern = new RegExp(
+		`^(${FIELD_CONTEXT_PREFIXES.join('|')})\\.`,
+		'i',
+	);
+	return key.replace(prefixPattern, '').trim();
+}
+
+/**
+ * Compares two keys by their base name (without prefix).
+ * This ensures that 'service.name' matches 'resource.service.name'
+ */
+export function isKeyMatch(
+	itemKey: string | undefined,
+	filterKey: string | undefined,
+): boolean {
+	return getKeyWithoutPrefix(itemKey) === getKeyWithoutPrefix(filterKey);
+}
--- a/frontend/src/components/TimelineV3/TimelineV3.styles.scss
+++ b/frontend/src/components/TimelineV3/TimelineV3.styles.scss
@@ -0,0 +1,4 @@
+.timeline-v3-container {
+	// flex: 1;
+	overflow: visible;
+}
--- a/frontend/src/components/TimelineV3/TimelineV3.tsx
+++ b/frontend/src/components/TimelineV3/TimelineV3.tsx
@@ -0,0 +1,87 @@
+import { useEffect, useState } from 'react';
+import { useMeasure } from 'react-use';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+
+import {
+	getIntervals,
+	getMinimumIntervalsBasedOnWidth,
+	Interval,
+} from './utils';
+
+import './TimelineV3.styles.scss';
+
+interface ITimelineV3Props {
+	startTimestamp: number;
+	endTimestamp: number;
+	timelineHeight: number;
+	offsetTimestamp: number;
+}
+
+function TimelineV3(props: ITimelineV3Props): JSX.Element {
+	const {
+		startTimestamp,
+		endTimestamp,
+		timelineHeight,
+		offsetTimestamp,
+	} = props;
+	const [intervals, setIntervals] = useState<Interval[]>([]);
+	const [ref, { width }] = useMeasure<HTMLDivElement>();
+	const isDarkMode = useIsDarkMode();
+
+	useEffect(() => {
+		const spread = endTimestamp - startTimestamp;
+		if (spread < 0) {
+			return;
+		}
+
+		const minIntervals = getMinimumIntervalsBasedOnWidth(width);
+		const intervalisedSpread = (spread / minIntervals) * 1.0;
+		const intervals = getIntervals(intervalisedSpread, spread, offsetTimestamp);
+
+		setIntervals(intervals);
+	}, [startTimestamp, endTimestamp, width, offsetTimestamp]);
+
+	if (endTimestamp < startTimestamp) {
+		console.error(
+			'endTimestamp cannot be less than startTimestamp',
+			startTimestamp,
+			endTimestamp,
+		);
+		return <div />;
+	}
+
+	const strokeColor = isDarkMode ? ' rgb(192,193,195,0.8)' : 'black';
+
+	return (
+		<div ref={ref as never} className="timeline-v3-container">
+			<svg
+				width={width}
+				height={timelineHeight * 2.5}
+				xmlns="http://www.w3.org/2000/svg"
+				overflow="visible"
+			>
+				{intervals &&
+					intervals.length > 0 &&
+					intervals.map((interval, index) => (
+						<g
+							transform={`translate(${(interval.percentage * width) / 100},0)`}
+							key={`${interval.percentage + interval.label + index}`}
+							textAnchor="middle"
+							fontSize="0.6rem"
+						>
+							<text
+								x={index === intervals.length - 1 ? -10 : 0}
+								y={timelineHeight * 2}
+								fill={strokeColor}
+							>
+								{interval.label}
+							</text>
+							<line y1={0} y2={timelineHeight} stroke={strokeColor} strokeWidth="1" />
+						</g>
+					))}
+			</svg>
+		</div>
+	);
+}
+
+export default TimelineV3;
--- a/frontend/src/components/TimelineV3/utils.ts
+++ b/frontend/src/components/TimelineV3/utils.ts
@@ -0,0 +1,93 @@
+import {
+	IIntervalUnit,
+	Interval,
+	INTERVAL_UNITS,
+	resolveTimeFromInterval,
+} from 'components/TimelineV2/utils';
+import { toFixed } from 'utils/toFixed';
+
+export type { Interval };
+
+/** Fewer intervals than TimelineV2 for a cleaner flamegraph ruler. */
+export function getMinimumIntervalsBasedOnWidth(width: number): number {
+	if (width < 640) {
+		return 3;
+	}
+	if (width < 768) {
+		return 4;
+	}
+	if (width < 1024) {
+		return 5;
+	}
+	return 6;
+}
+
+/**
+ * Computes timeline intervals with offset-aware labels.
+ * Labels reflect absolute time from trace start (offsetTimestamp + elapsed),
+ * so when zoomed into a window, the first tick shows e.g. "50ms" not "0ms".
+ */
+export function getIntervals(
+	intervalSpread: number,
+	baseSpread: number,
+	offsetTimestamp: number,
+): Interval[] {
+	const integerPartString = intervalSpread.toString().split('.')[0];
+	const integerPartLength = integerPartString.length;
+
+	const intervalSpreadNormalized =
+		intervalSpread < 1.0
+			? intervalSpread
+			: Math.floor(Number(integerPartString) / 10 ** (integerPartLength - 1)) *
+			  10 ** (integerPartLength - 1);
+
+	// Unit must suit both: (1) tick granularity (intervalSpread) and (2) label magnitude
+	// (offsetTimestamp). When zoomed deep into a trace, labels show offsetTimestamp + elapsed,
+	// so we must pick a unit where that value is readable (e.g. "500.00s" not "500000.00ms").
+	const valueForUnitSelection = Math.max(offsetTimestamp, intervalSpread);
+	let intervalUnit: IIntervalUnit = INTERVAL_UNITS[0];
+	for (let idx = INTERVAL_UNITS.length - 1; idx >= 0; idx -= 1) {
+		const standardInterval = INTERVAL_UNITS[idx];
+		if (valueForUnitSelection * standardInterval.multiplier >= 1) {
+			intervalUnit = INTERVAL_UNITS[idx];
+			break;
+		}
+	}
+
+	const intervals: Interval[] = [
+		{
+			label: `${toFixed(
+				resolveTimeFromInterval(offsetTimestamp, intervalUnit),
+				2,
+			)}${intervalUnit.name}`,
+			percentage: 0,
+		},
+	];
+
+	let tempBaseSpread = baseSpread;
+	let elapsedIntervals = 0;
+
+	while (tempBaseSpread && intervals.length < 20) {
+		let intervalTime: number;
+
+		if (tempBaseSpread <= 1.5 * intervalSpreadNormalized) {
+			intervalTime = elapsedIntervals + tempBaseSpread;
+			tempBaseSpread = 0;
+		} else {
+			intervalTime = elapsedIntervals + intervalSpreadNormalized;
+			tempBaseSpread -= intervalSpreadNormalized;
+		}
+
+		elapsedIntervals = intervalTime;
+		const labelTime = offsetTimestamp + intervalTime;
+
+		intervals.push({
+			label: `${toFixed(resolveTimeFromInterval(labelTime, intervalUnit), 2)}${
+				intervalUnit.name
+			}`,
+			percentage: (intervalTime / baseSpread) * 100,
+		});
+	}
+
+	return intervals;
+}
--- a/frontend/src/constants/query.ts
+++ b/frontend/src/constants/query.ts
@@ -55,4 +55,5 @@ export enum QueryParams {
 	source = 'source',
 	showClassicCreateAlertsPage = 'showClassicCreateAlertsPage',
 	isTestAlert = 'isTestAlert',
+	yAxisUnit = 'yAxisUnit',
 }
--- a/frontend/src/constants/theme.ts
+++ b/frontend/src/constants/theme.ts
@@ -33,6 +33,125 @@ const themeColors = {
 		purple: '#800080',
 		cyan: '#00FFFF',
 	},
+	traceDetailColorsV3: {
+		// Blues
+		dodgerBlue: '#2F80ED',
+		royalBlue: '#3366E6',
+		steelBlue: '#4682B4',
+
+		// Teals / Cyans
+		turquoise: '#00CEC9',
+		lagoon: '#1ABC9C',
+		cyanBright: '#22A6F2',
+
+		// Greens
+		emeraldGreen: '#27AE60',
+		mediumSeaGreen: '#3CB371',
+		limeGreen: '#A3E635',
+
+		// Yellows / Golds
+		festivalYellow: '#F2C94C',
+		sunflower: '#FFD93D',
+		warmAmber: '#FFCA28',
+
+		// Purples / Violets
+		mediumPurple: '#BB6BD9',
+		royalPurple: '#9B51E0',
+		orchid: '#DA77F2',
+
+		// Accent
+		neonViolet: '#C77DFF',
+		electricPurple: '#6C5CE7',
+		arcticBlue: '#48DBFB',
+
+		// Blues extended
+		blue1: '#1F63E0',
+		blue2: '#3A7AED',
+		blue3: '#5A9DF5',
+		blue4: '#2874A6',
+		blue5: '#2E86C1',
+		blue6: '#3498DB',
+
+		// Cyans
+		cyan1: '#00B0AA',
+		cyan2: '#33D6C2',
+		cyan3: '#66E9DA',
+
+		// Greens extended
+		green1: '#1E8449',
+		green2: '#2ECC71',
+		green3: '#58D68D',
+		green4: '#229954',
+		green5: '#27AE60',
+		green6: '#52BE80',
+
+		// Forest
+		forest1: '#27AE60',
+		forest2: '#2ECC71',
+		forest3: '#58D68D',
+
+		// Lime
+		lime1: '#A3E635',
+		lime2: '#B9F18D',
+		lime3: '#D4FFB0',
+
+		// Teals
+		teal1: '#009688',
+		teal2: '#1ABC9C',
+		teal3: '#48C9B0',
+		teal4: '#1ABC9C',
+		teal5: '#48C9B0',
+		teal6: '#76D7C4',
+
+		// Yellows
+		yellow1: '#F1C40F',
+		yellow2: '#F7DC6F',
+		yellow3: '#F9E79F',
+
+		// Gold
+		gold1: '#F39C12',
+		gold2: '#F1C40F',
+		gold3: '#F7DC6F',
+		gold4: '#B7950B',
+		gold5: '#F1C40F',
+		gold6: '#F4D03F',
+
+		// Mustard
+		mustard1: '#F1C40F',
+		mustard2: '#F7DC6F',
+		mustard3: '#F9E79F',
+
+		// Aqua
+		aqua1: '#00BFFF',
+		aqua2: '#1E90FF',
+		aqua3: '#63B8FF',
+
+		// Purple extended
+		purple1: '#8E44AD',
+		purple2: '#9B59B6',
+		purple3: '#BB8FCE',
+
+		violet1: '#8E44AD',
+		violet2: '#9B59B6',
+		violet3: '#BB8FCE',
+		violet4: '#7D3C98',
+		violet5: '#8E44AD',
+		violet6: '#9B59B6',
+
+		// Lavender
+		lavender1: '#9B59B6',
+		lavender2: '#AF7AC5',
+		lavender3: '#C39BD3',
+
+		// Oranges (safe ones, not red-ish)
+		orange4: '#D35400',
+		orange5: '#E67E22',
+		orange6: '#EB984E',
+
+		coral1: '#E67E22',
+		coral2: '#F39C12',
+		coral3: '#F5B041',
+	},
 	chartcolors: {
 		// Blues (3)
 		dodgerBlue: '#2F80ED',
--- a/frontend/src/container/LogsExplorerViews/index.tsx
+++ b/frontend/src/container/LogsExplorerViews/index.tsx
@@ -39,6 +39,7 @@ import { useGetExplorerQueryRange } from 'hooks/queryBuilder/useGetExplorerQuery
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQueryData from 'hooks/useUrlQueryData';
+import useUrlYAxisUnit from 'hooks/useUrlYAxisUnit';
 import { isEmpty, isUndefined } from 'lodash-es';
 import LiveLogs from 'pages/LiveLogs';
 import { UpdateTimeInterval } from 'store/actions';
@@ -59,6 +60,7 @@ import LogsActionsContainer from './LogsActionsContainer';

 import './LogsExplorerViews.styles.scss';

+// eslint-disable-next-line sonarjs/cognitive-complexity
 function LogsExplorerViewsContainer({
 	setIsLoadingQueries,
 	listQueryKeyRef,
@@ -109,7 +111,7 @@ function LogsExplorerViewsContainer({

 	const [orderBy, setOrderBy] = useState<string>('timestamp:desc');

-	const [yAxisUnit, setYAxisUnit] = useState<string>('');
+	const { yAxisUnit, onUnitChange } = useUrlYAxisUnit('');

 	const listQuery = useMemo(() => getListQuery(stagedQuery) || null, [
 		stagedQuery,
@@ -367,10 +369,6 @@ function LogsExplorerViewsContainer({
 		orderBy,
 	]);

-	const onUnitChangeHandler = useCallback((value: string): void => {
-		setYAxisUnit(value);
-	}, []);
-
 	const chartData = useMemo(() => {
 		if (!stagedQuery) {
 			return [];
@@ -488,10 +486,7 @@ function LogsExplorerViewsContainer({
 					{selectedPanelType === PANEL_TYPES.TIME_SERIES && !showLiveLogs && (
 						<div className="time-series-view-container">
 							<div className="time-series-view-container-header">
-								<BuilderUnitsFilter
-									onChange={onUnitChangeHandler}
-									yAxisUnit={yAxisUnit}
-								/>
+								<BuilderUnitsFilter onChange={onUnitChange} yAxisUnit={yAxisUnit} />
 							</div>
 							<TimeSeriesView
 								isLoading={isLoading || isFetching}
--- a/frontend/src/container/MeterExplorer/Explorer/TimeSeries.tsx
+++ b/frontend/src/container/MeterExplorer/Explorer/TimeSeries.tsx
@@ -1,4 +1,4 @@
-import { useMemo, useState } from 'react';
+import { useMemo } from 'react';
 import { useQueries } from 'react-query';
 // eslint-disable-next-line no-restricted-imports
 import { useSelector } from 'react-redux';
@@ -11,6 +11,7 @@ import { BuilderUnitsFilter } from 'container/QueryBuilder/filters/BuilderUnitsF
 import TimeSeriesView from 'container/TimeSeriesView/TimeSeriesView';
 import { convertDataValueToMs } from 'container/TimeSeriesView/utils';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
+import useUrlYAxisUnit from 'hooks/useUrlYAxisUnit';
 import { GetMetricQueryRange } from 'lib/dashboard/getQueryResults';
 import { useErrorModal } from 'providers/ErrorModalProvider';
 import { AppState } from 'store/reducers';
@@ -22,14 +23,13 @@ import { GlobalReducer } from 'types/reducer/globalTime';

 function TimeSeries(): JSX.Element {
 	const { stagedQuery, currentQuery } = useQueryBuilder();
+	const { yAxisUnit, onUnitChange } = useUrlYAxisUnit('');

 	const { selectedTime: globalSelectedTime, maxTime, minTime } = useSelector<
 		AppState,
 		GlobalReducer
 	>((state) => state.globalTime);

-	const [yAxisUnit, setYAxisUnit] = useState<string>('');
-
 	const isValidToConvertToMs = useMemo(() => {
 		const isValid: boolean[] = [];

@@ -112,10 +112,6 @@ function TimeSeries(): JSX.Element {
 		[data, isValidToConvertToMs],
 	);

-	const onUnitChangeHandler = (value: string): void => {
-		setYAxisUnit(value);
-	};
-
 	const hasMetricSelected = useMemo(
 		() => currentQuery.builder.queryData.some((q) => q.aggregateAttribute?.key),
 		[currentQuery],
@@ -123,7 +119,7 @@ function TimeSeries(): JSX.Element {

 	return (
 		<div className="meter-time-series-container">
-			<BuilderUnitsFilter onChange={onUnitChangeHandler} yAxisUnit={yAxisUnit} />
+			<BuilderUnitsFilter onChange={onUnitChange} yAxisUnit={yAxisUnit} />
 			<div className="time-series-container">
 				{!hasMetricSelected && <EmptyMetricsSearch />}
 				{hasMetricSelected &&
--- a/frontend/src/container/OnboardingV2Container/AddDataSource/AddDataSource.tsx
+++ b/frontend/src/container/OnboardingV2Container/AddDataSource/AddDataSource.tsx
@@ -619,6 +619,11 @@ function OnboardingAddDataSource(): JSX.Element {
 		);
 	};

+	const progressText = `Get Started (${Math.min(
+		currentStep + 1,
+		setupStepItems.length,
+	)}/${setupStepItems.length})`;
+
 	return (
 		<div className="onboarding-v2">
 			<Layout>
@@ -639,7 +644,7 @@ function OnboardingAddDataSource(): JSX.Element {
 									history.push(ROUTES.HOME);
 								}}
 							/>
-							<Typography.Text>Get Started (2/4)</Typography.Text>
+							<Typography.Text>{progressText}</Typography.Text>
 						</div>

 						<div className="header-right-section">
--- a/frontend/src/container/OnboardingV2Container/onboarding-configs/onboarding-config-with-links.json
+++ b/frontend/src/container/OnboardingV2Container/onboarding-configs/onboarding-config-with-links.json
@@ -611,6 +611,34 @@
 			]
 		}
 	},
+	{
+		"dataSource": "deno",
+		"label": "Deno",
+		"imgUrl": "/Logos/deno.svg",
+		"tags": [
+			"apm/traces",
+			"logs",
+			"metrics"
+		],
+		"module": "apm",
+		"relatedSearchKeywords": [
+			"deno",
+			"deno monitoring",
+			"deno observability",
+			"javascript",
+			"js",
+			"ts",
+			"typescript",
+			"opentelemetry deno",
+			"observability",
+			"metrics",
+			"logs",
+			"traces",
+			"tracing"
+		],
+		"id": "deno",
+		"link": "/docs/instrumentation/opentelemetry-deno/"
+	},
 	{
 		"dataSource": "javascript",
 		"label": "JavaScript",
@@ -1828,15 +1856,33 @@
 		],
 		"module": "logs",
 		"relatedSearchKeywords": [
+			"apache",
 			"application log file collection",
+			"c#",
+			"c++",
 			"collect",
 			"collect logs from file",
 			"collect logs from log file",
+			"cpp",
+			"csharp",
 			"custom log file monitoring",
+			"deno",
+			"django",
+			"dotnet",
+			"elixir",
+			"express",
 			"file",
 			"file based logging",
 			"filebeat alternative",
+			"flask",
 			"from-log-file",
+			"go",
+			"golang",
+			"java",
+			"javascript",
+			"js",
+			"kotlin",
+			"linux",
 			"log",
 			"log file ingestion",
 			"log file to signoz",
@@ -1844,7 +1890,29 @@
 			"log tailing with otel",
 			"logging",
 			"logs",
-			"otel file logs"
+			"macos",
+			"mongodb",
+			"mysql",
+			"nestjs",
+			"nextjs",
+			"nginx",
+			"otel file logs",
+			"php",
+			"postgres",
+			"postgresql",
+			"python",
+			"rails",
+			"react",
+			"redis",
+			"ruby",
+			"rust",
+			"scala",
+			"spring",
+			"swift",
+			"ts",
+			"typescript",
+			"vue",
+			"windows"
 		],
 		"link": "/docs/userguide/collect_logs_from_file/"
 	},
@@ -5208,7 +5276,7 @@
 	{
 		"dataSource": "prometheus-metrics",
 		"label": "Prometheus Metrics",
-		"imgUrl": "/Logos/other-metrics.svg",
+		"imgUrl": "/Logos/prometheus.svg",
 		"tags": [
 			"metrics",
 			"infrastructure monitoring"
@@ -5809,5 +5877,250 @@
 				}
 			]
 		}
+	},
+	{
+		"dataSource": "rust-metrics",
+		"label": "Rust Metrics",
+		"imgUrl": "/Logos/rust.svg",
+		"tags": [
+			"metrics"
+		],
+		"module": "metrics",
+		"relatedSearchKeywords": [
+			"metrics",
+			"opentelemetry rust",
+			"otel rust",
+			"rust",
+			"rust metrics",
+			"rust monitoring",
+			"rust observability"
+		],
+		"id": "rust-metrics",
+		"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-rust/",
+		"question": {
+			"desc": "What is your Environment?",
+			"type": "select",
+			"entityID": "environment",
+			"options": [
+				{
+					"key": "vm",
+					"label": "VM",
+					"imgUrl": "/Logos/vm.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-rust/"
+				},
+				{
+					"key": "k8s",
+					"label": "Kubernetes",
+					"imgUrl": "/Logos/kubernetes.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-rust/"
+				},
+				{
+					"key": "windows",
+					"label": "Windows",
+					"imgUrl": "/Logos/windows.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-rust/"
+				},
+				{
+					"key": "docker",
+					"label": "Docker",
+					"imgUrl": "/Logos/docker.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-rust/"
+				}
+			]
+		}
+	},
+	{
+		"dataSource": "ruby-metrics",
+		"label": "Ruby Metrics",
+		"imgUrl": "/Logos/ruby-on-rails.svg",
+		"tags": [
+			"metrics"
+		],
+		"module": "metrics",
+		"relatedSearchKeywords": [
+			"metrics",
+			"opentelemetry ruby",
+			"otel ruby",
+			"ruby",
+			"ruby metrics",
+			"ruby monitoring",
+			"ruby observability",
+			"ruby on rails metrics"
+		],
+		"id": "ruby-metrics",
+		"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-ruby/",
+		"question": {
+			"desc": "What is your Environment?",
+			"type": "select",
+			"entityID": "environment",
+			"options": [
+				{
+					"key": "vm",
+					"label": "VM",
+					"imgUrl": "/Logos/vm.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-ruby/"
+				},
+				{
+					"key": "k8s",
+					"label": "Kubernetes",
+					"imgUrl": "/Logos/kubernetes.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-ruby/"
+				},
+				{
+					"key": "windows",
+					"label": "Windows",
+					"imgUrl": "/Logos/windows.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-ruby/"
+				},
+				{
+					"key": "docker",
+					"label": "Docker",
+					"imgUrl": "/Logos/docker.svg",
+					"link": "/docs/metrics-management/send-metrics/applications/opentelemetry-ruby/"
+				}
+			]
+		}
+	},
+	{
+		"dataSource": "statsd",
+		"label": "StatsD",
+		"imgUrl": "/Logos/statsd.svg",
+		"tags": [
+			"metrics"
+		],
+		"module": "metrics",
+		"relatedSearchKeywords": [
+			"metrics",
+			"statsd",
+			"statsd metrics",
+			"statsd monitoring",
+			"statsd observability"
+		],
+		"id": "statsd",
+		"link": "/docs/userguide/opentelemetry-statsd/"
+	},
+	{
+		"dataSource": "nvidia-dcgm",
+		"label": "Nvidia DCGM",
+		"imgUrl": "/Logos/nvidia-dcgm.svg",
+		"tags": [
+			"infrastructure monitoring"
+		],
+		"module": "infra-monitoring-hosts",
+		"relatedSearchKeywords": [
+			"dcgm",
+			"gpu monitoring",
+			"infrastructure monitoring",
+			"nvidia",
+			"nvidia dcgm",
+			"nvidia metrics"
+		],
+		"id": "nvidia-dcgm",
+		"link": "/docs/metrics-management/nvidia-dcgm-metrics/"
+	},
+	{
+		"dataSource": "slurm",
+		"label": "Slurm",
+		"imgUrl": "/Logos/slurm.svg",
+		"tags": [
+			"infrastructure monitoring"
+		],
+		"module": "infra-monitoring-hosts",
+		"relatedSearchKeywords": [
+			"infrastructure monitoring",
+			"slurm",
+			"slurm cluster monitoring",
+			"slurm metrics"
+		],
+		"id": "slurm",
+		"link": "/docs/metrics-management/slurm-metrics/"
+	},
+	{
+		"dataSource": "ollama-monitoring",
+		"label": "Ollama",
+		"imgUrl": "/Logos/ollama.svg",
+		"tags": [
+			"LLM Monitoring"
+		],
+		"module": "apm",
+		"relatedSearchKeywords": [
+			"llm",
+			"llm monitoring",
+			"monitoring",
+			"observability",
+			"ollama",
+			"ollama monitoring",
+			"otel ollama",
+			"traces",
+			"tracing"
+		],
+		"id": "ollama-monitoring",
+		"link": "/docs/ollama-monitoring/"
+	},
+	{
+		"dataSource": "haystack-monitoring",
+		"label": "Haystack",
+		"imgUrl": "/Logos/haystack.svg",
+		"tags": [
+			"LLM Monitoring"
+		],
+		"module": "apm",
+		"relatedSearchKeywords": [
+			"haystack",
+			"haystack monitoring",
+			"llm",
+			"llm monitoring",
+			"monitoring",
+			"observability",
+			"otel haystack",
+			"traces",
+			"tracing"
+		],
+		"id": "haystack-monitoring",
+		"link": "/docs/haystack-monitoring/"
+	},
+	{
+		"dataSource": "openrouter-observability",
+		"label": "OpenRouter",
+		"imgUrl": "/Logos/openrouter.svg",
+		"tags": [
+			"LLM Monitoring"
+		],
+		"module": "apm",
+		"relatedSearchKeywords": [
+			"llm",
+			"llm monitoring",
+			"monitoring",
+			"observability",
+			"openrouter",
+			"openrouter monitoring",
+			"otel openrouter",
+			"traces",
+			"tracing"
+		],
+		"id": "openrouter-observability",
+		"link": "/docs/openrouter-observability/"
+	},
+	{
+		"dataSource": "huggingface-observability",
+		"label": "Hugging Face",
+		"imgUrl": "/Logos/huggingface.svg",
+		"tags": [
+			"LLM Monitoring"
+		],
+		"module": "apm",
+		"relatedSearchKeywords": [
+			"hugging face monitoring",
+			"huggingface",
+			"llm",
+			"llm monitoring",
+			"monitoring",
+			"observability",
+			"otel huggingface",
+			"traces",
+			"tracing"
+		],
+		"id": "huggingface-observability",
+		"link": "/docs/huggingface-observability/"
 	}
 ]
--- a/frontend/src/hooks/useUrlYAxisUnit.ts
+++ b/frontend/src/hooks/useUrlYAxisUnit.ts
@@ -0,0 +1,33 @@
+import { useCallback } from 'react';
+import { QueryParams } from 'constants/query';
+import { parseAsString, useQueryState } from 'nuqs';
+
+interface UseUrlYAxisUnitResult {
+	yAxisUnit: string;
+	onUnitChange: (value: string) => void;
+}
+
+/**
+ * Hook to manage y-axis unit synchronized with the URL query param.
+ * It:
+ * - Initializes from `QueryParams.yAxisUnit` or a provided default
+ * - Keeps local state in sync when the URL changes (e.g. back/forward, shared links)
+ * - Writes updates back to the URL while preserving existing query params
+ */
+function useUrlYAxisUnit(defaultUnit = ''): UseUrlYAxisUnitResult {
+	const [yAxisUnit, setYAxisUnitInUrl] = useQueryState(
+		QueryParams.yAxisUnit,
+		parseAsString.withDefault(defaultUnit),
+	);
+
+	const onUnitChange = useCallback(
+		(value: string): void => {
+			setYAxisUnitInUrl(value || null);
+		},
+		[setYAxisUnitInUrl],
+	);
+
+	return { yAxisUnit, onUnitChange };
+}
+
+export default useUrlYAxisUnit;
--- a/frontend/src/index.tsx
+++ b/frontend/src/index.tsx
@@ -6,6 +6,7 @@ import { Provider } from 'react-redux';
 import AppRoutes from 'AppRoutes';
 import { AxiosError } from 'axios';
 import { ThemeProvider } from 'hooks/useDarkMode';
+import { NuqsAdapter } from 'nuqs/adapters/react';
 import { AppProvider } from 'providers/App/App';
 import TimezoneProvider from 'providers/Timezone';
 import store from 'store';
@@ -45,17 +46,19 @@ if (container) {

 	root.render(
 		<HelmetProvider>
-			<ThemeProvider>
-				<TimezoneProvider>
-					<QueryClientProvider client={queryClient}>
-						<Provider store={store}>
-							<AppProvider>
-								<AppRoutes />
-							</AppProvider>
-						</Provider>
-					</QueryClientProvider>
-				</TimezoneProvider>
-			</ThemeProvider>
+			<NuqsAdapter>
+				<ThemeProvider>
+					<TimezoneProvider>
+						<QueryClientProvider client={queryClient}>
+							<Provider store={store}>
+								<AppProvider>
+									<AppRoutes />
+								</AppProvider>
+							</Provider>
+						</QueryClientProvider>
+					</TimezoneProvider>
+				</ThemeProvider>
+			</NuqsAdapter>
 		</HelmetProvider>,
 	);
 }
--- a/frontend/src/pages/TraceDetailV2/index.tsx
+++ b/frontend/src/pages/TraceDetailV2/index.tsx
@@ -4,19 +4,11 @@ import ROUTES from 'constants/routes';
 import history from 'lib/history';
 import { Compass, Cone, TowerControl } from 'lucide-react';

-import TraceDetailsV2 from './TraceDetailV2';
+import TraceDetailsV3 from '../TraceDetailsV3';

 import './TraceDetailV2.styles.scss';

-interface INewTraceDetailProps {
-	items: {
-		label: JSX.Element;
-		key: string;
-		children: JSX.Element;
-	}[];
-}
-
-function NewTraceDetail(props: INewTraceDetailProps): JSX.Element {
+function NewTraceDetail(props: any): JSX.Element {
 	const { items } = props;
 	return (
 		<div className="traces-module-container">
@@ -50,7 +42,7 @@ export default function TraceDetailsPage(): JSX.Element {
 				</div>
 			),
 			key: 'trace-details',
-			children: <TraceDetailsV2 />,
+			children: <TraceDetailsV3 />,
 		},
 		{
 			label: (
--- a/frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.styles.scss
+++ b/frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.styles.scss
@@ -0,0 +1,91 @@
+.trace-details-header {
+	display: flex;
+	align-items: center;
+	padding: 0px 16px;
+
+	.previous-btn {
+		display: flex;
+		height: 30px;
+		padding: 6px 8px;
+		align-items: center;
+		gap: 4px;
+		border: 1px solid var(--bg-slate-300);
+		background: var(--bg-slate-500);
+		border-radius: 4px;
+		box-shadow: none;
+	}
+
+	.trace-name {
+		display: flex;
+		padding: 6px 8px;
+		margin-left: 6px;
+		align-items: center;
+		gap: 4px;
+		border: 1px solid var(--bg-slate-300);
+		border-radius: 4px 0px 0px 4px;
+		background: var(--bg-slate-500);
+
+		.drafting {
+			color: white;
+		}
+
+		.trace-id {
+			color: #fff;
+			font-family: Inter;
+			font-size: 13px;
+			font-style: normal;
+			font-weight: 400;
+			line-height: 18px;
+			letter-spacing: -0.07px;
+		}
+	}
+
+	.trace-id-value {
+		display: flex;
+		padding: 6px 8px;
+		justify-content: center;
+		align-items: center;
+		gap: 10px;
+		background: var(--bg-slate-400);
+		color: var(--Vanilla-400, #c0c1c3);
+		font-family: Inter;
+		font-size: 13px;
+		font-style: normal;
+		font-weight: 400;
+		line-height: 18px;
+		letter-spacing: -0.07px;
+		border: 1px solid var(--bg-slate-300);
+		border-left: unset;
+		border-radius: 0px 4px 4px 0px;
+	}
+}
+
+.lightMode {
+	.trace-details-header {
+		.previous-btn {
+			border: 1px solid var(--bg-vanilla-300);
+			background: var(--bg-vanilla-200);
+		}
+
+		.trace-name {
+			border: 1px solid var(--bg-vanilla-300);
+			background: var(--bg-vanilla-200);
+			border-right: none;
+
+			.drafting {
+				color: var(--bg-ink-100);
+			}
+
+			.trace-id {
+				color: var(--bg-ink-100);
+			}
+		}
+
+		.trace-id-value {
+			background: var(--bg-vanilla-300);
+			color: var(--bg-ink-400);
+			border: 1px solid var(--bg-vanilla-300);
+		}
+	}
+}
+// TODO: move to new css module name system
--- a/frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.tsx
+++ b/frontend/src/pages/TraceDetailsV3/TraceDetailsHeader/TraceDetailsHeader.tsx
@@ -0,0 +1,38 @@
+import { useCallback } from 'react';
+import { useParams } from 'react-router-dom';
+import { Button, Typography } from 'antd';
+import ROUTES from 'constants/routes';
+import history from 'lib/history';
+import { ArrowLeft } from 'lucide-react';
+import { TraceDetailV2URLProps } from 'types/api/trace/getTraceV2';
+
+import './TraceDetailsHeader.styles.scss';
+
+function TraceDetailsHeader(): JSX.Element {
+	const { id: traceID } = useParams<TraceDetailV2URLProps>();
+
+	const handlePreviousBtnClick = useCallback((): void => {
+		const isSpaNavigate =
+			document.referrer &&
+			new URL(document.referrer).origin === window.location.origin;
+		if (isSpaNavigate) {
+			history.goBack();
+		} else {
+			history.push(ROUTES.TRACES_EXPLORER);
+		}
+	}, []);
+
+	return (
+		<div className="trace-details-header">
+			<Button className="previous-btn" onClick={handlePreviousBtnClick}>
+				<ArrowLeft size={14} />
+			</Button>
+			<div className="trace-name">
+				<Typography.Text className="trace-id">Trace ID</Typography.Text>
+			</div>
+			<Typography.Text className="trace-id-value">{traceID}</Typography.Text>
+		</div>
+	);
+}
+
+export default TraceDetailsHeader;
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/FlamegraphCanvas.tsx
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/FlamegraphCanvas.tsx
@@ -0,0 +1,237 @@
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { createPortal } from 'react-dom';
+import TimelineV3 from 'components/TimelineV3/TimelineV3';
+import { useIsDarkMode } from 'hooks/useDarkMode';
+
+import { DEFAULT_ROW_HEIGHT } from './constants';
+import { useCanvasSetup } from './hooks/useCanvasSetup';
+import { useFlamegraphDrag } from './hooks/useFlamegraphDrag';
+import { useFlamegraphDraw } from './hooks/useFlamegraphDraw';
+import { useFlamegraphHover } from './hooks/useFlamegraphHover';
+import { useFlamegraphZoom } from './hooks/useFlamegraphZoom';
+import { useScrollToSpan } from './hooks/useScrollToSpan';
+import { FlamegraphCanvasProps, SpanRect } from './types';
+import { formatDuration } from './utils';
+
+function FlamegraphCanvas(props: FlamegraphCanvasProps): JSX.Element {
+	const { spans, traceMetadata, firstSpanAtFetchLevel, onSpanClick } = props;
+
+	const isDarkMode = useIsDarkMode(); //TODO: see if can be removed or use a new hook
+	const canvasRef = useRef<HTMLCanvasElement>(null);
+	const containerRef = useRef<HTMLDivElement>(null);
+	const spanRectsRef = useRef<SpanRect[]>([]);
+
+	const [viewStartTs, setViewStartTs] = useState<number>(
+		traceMetadata.startTime,
+	);
+	const [viewEndTs, setViewEndTs] = useState<number>(traceMetadata.endTime);
+	const [scrollTop, setScrollTop] = useState<number>(0);
+	const [rowHeight, setRowHeight] = useState<number>(DEFAULT_ROW_HEIGHT);
+
+	// Mutable refs for zoom and drag hooks to read during rAF / mouse callbacks
+	const viewStartRef = useRef(viewStartTs);
+	const viewEndRef = useRef(viewEndTs);
+	const rowHeightRef = useRef(rowHeight);
+	const scrollTopRef = useRef(scrollTop);
+
+	useEffect(() => {
+		viewStartRef.current = viewStartTs;
+	}, [viewStartTs]);
+
+	useEffect(() => {
+		viewEndRef.current = viewEndTs;
+	}, [viewEndTs]);
+
+	useEffect(() => {
+		rowHeightRef.current = rowHeight;
+	}, [rowHeight]);
+
+	useEffect(() => {
+		scrollTopRef.current = scrollTop;
+	}, [scrollTop]);
+
+	useEffect(() => {
+		//TODO: see if this can be removed as once loaded the view start and end ts will not change
+		setViewStartTs(traceMetadata.startTime);
+		setViewEndTs(traceMetadata.endTime);
+		viewStartRef.current = traceMetadata.startTime;
+		viewEndRef.current = traceMetadata.endTime;
+	}, [traceMetadata.startTime, traceMetadata.endTime]);
+
+	const totalHeight = spans.length * rowHeight;
+
+	const { isOverFlamegraphRef } = useFlamegraphZoom({
+		canvasRef,
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		rowHeightRef,
+		setViewStartTs,
+		setViewEndTs,
+		setRowHeight,
+	});
+
+	const {
+		handleMouseDown,
+		handleMouseMove: handleDragMouseMove,
+		handleMouseUp,
+		handleDragMouseLeave,
+		suppressClickRef,
+		isDraggingRef,
+	} = useFlamegraphDrag({
+		canvasRef,
+		containerRef,
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		setViewStartTs,
+		setViewEndTs,
+		scrollTopRef,
+		setScrollTop,
+		totalHeight,
+	});
+
+	const {
+		hoveredSpanId,
+		handleHoverMouseMove,
+		handleHoverMouseLeave,
+		handleClick,
+		tooltipContent,
+	} = useFlamegraphHover({
+		canvasRef,
+		spanRectsRef,
+		traceMetadata,
+		viewStartTs,
+		viewEndTs,
+		isDraggingRef,
+		suppressClickRef,
+		onSpanClick,
+		isDarkMode,
+	});
+
+	const { drawFlamegraph } = useFlamegraphDraw({
+		canvasRef,
+		containerRef,
+		spans,
+		viewStartTs,
+		viewEndTs,
+		scrollTop,
+		rowHeight,
+		selectedSpanId: firstSpanAtFetchLevel || undefined,
+		hoveredSpanId: hoveredSpanId ?? '',
+		isDarkMode,
+		spanRectsRef,
+	});
+
+	useScrollToSpan({
+		firstSpanAtFetchLevel,
+		spans,
+		traceMetadata,
+		containerRef,
+		viewStartRef,
+		viewEndRef,
+		scrollTopRef,
+		rowHeight,
+		setViewStartTs,
+		setViewEndTs,
+		setScrollTop,
+	});
+
+	useCanvasSetup(canvasRef, containerRef, drawFlamegraph);
+
+	const handleMouseMove = useCallback(
+		(e: React.MouseEvent): void => {
+			handleDragMouseMove(e);
+			handleHoverMouseMove(e);
+		},
+		[handleDragMouseMove, handleHoverMouseMove],
+	);
+
+	const handleMouseLeave = useCallback((): void => {
+		isOverFlamegraphRef.current = false;
+		handleDragMouseLeave();
+		handleHoverMouseLeave();
+	}, [isOverFlamegraphRef, handleDragMouseLeave, handleHoverMouseLeave]);
+
+	// todo: move to a separate component/utils file
+	const tooltipElement = tooltipContent
+		? createPortal(
+				<div
+					style={{
+						position: 'fixed',
+						left: Math.min(tooltipContent.clientX + 15, window.innerWidth - 220),
+						top: Math.min(tooltipContent.clientY + 15, window.innerHeight - 100),
+						zIndex: 1000,
+						backgroundColor: 'rgba(30, 30, 30, 0.95)',
+						color: '#fff',
+						padding: '8px 12px',
+						borderRadius: 4,
+						fontSize: 12,
+						fontFamily: 'Inter, sans-serif',
+						boxShadow: '0 2px 8px rgba(0,0,0,0.3)',
+						pointerEvents: 'none',
+					}}
+				>
+					<div
+						style={{
+							fontWeight: 600,
+							marginBottom: 4,
+							color: tooltipContent.spanColor,
+						}}
+					>
+						{tooltipContent.spanName}
+					</div>
+					<div>Status: {tooltipContent.status}</div>
+					<div>Start: {tooltipContent.startMs.toFixed(2)} ms</div>
+					<div>Duration: {formatDuration(tooltipContent.durationMs * 1e6)}</div>
+				</div>,
+				document.body,
+		  )
+		: null;
+
+	return (
+		<div
+			style={{
+				display: 'flex',
+				flexDirection: 'column',
+				height: '100%',
+				padding: '0 15px',
+			}}
+		>
+			{tooltipElement}
+			<TimelineV3
+				startTimestamp={viewStartTs}
+				endTimestamp={viewEndTs}
+				offsetTimestamp={viewStartTs - traceMetadata.startTime}
+				timelineHeight={10}
+			/>
+			<div
+				ref={containerRef}
+				style={{
+					flex: 1,
+					overflow: 'hidden',
+					position: 'relative',
+				}}
+				onMouseEnter={(): void => {
+					isOverFlamegraphRef.current = true;
+				}}
+				onMouseLeave={handleMouseLeave}
+			>
+				<canvas
+					ref={canvasRef}
+					style={{
+						display: 'block',
+						width: '100%',
+						cursor: 'grab',
+					}}
+					onMouseDown={handleMouseDown}
+					onMouseMove={handleMouseMove}
+					onMouseUp={handleMouseUp}
+					onClick={handleClick}
+				/>
+			</div>
+		</div>
+	);
+}
+
+export default FlamegraphCanvas;
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/TraceFlamegraph.tsx
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/TraceFlamegraph.tsx
@@ -0,0 +1,107 @@
+import { useCallback, useEffect, useMemo, useState } from 'react';
+import { useHistory, useLocation, useParams } from 'react-router-dom';
+import useGetTraceFlamegraph from 'hooks/trace/useGetTraceFlamegraph';
+import useUrlQuery from 'hooks/useUrlQuery';
+import { TraceDetailFlamegraphURLProps } from 'types/api/trace/getTraceFlamegraph';
+
+import FlamegraphCanvas from './FlamegraphCanvas';
+
+//TODO: analyse if this is needed or not and move to separate file if needed else delete this enum.
+enum TraceFlamegraphState {
+	LOADING = 'LOADING',
+	SUCCESS = 'SUCCESS',
+	NO_DATA = 'NO_DATA',
+	ERROR = 'ERROR',
+	FETCHING_WITH_OLD_DATA = 'FETCHING_WITH_OLD_DATA',
+}
+
+function TraceFlamegraph(): JSX.Element {
+	const { id: traceId } = useParams<TraceDetailFlamegraphURLProps>();
+	const urlQuery = useUrlQuery();
+	const history = useHistory();
+	const { search } = useLocation();
+	const [firstSpanAtFetchLevel, setFirstSpanAtFetchLevel] = useState<string>(
+		urlQuery.get('spanId') || '',
+	);
+
+	useEffect(() => {
+		setFirstSpanAtFetchLevel(urlQuery.get('spanId') || '');
+	}, [urlQuery]);
+
+	const handleSpanClick = useCallback(
+		(spanId: string): void => {
+			setFirstSpanAtFetchLevel(spanId);
+			const searchParams = new URLSearchParams(search);
+			//tood: use from query params constants
+			if (searchParams.get('spanId') !== spanId) {
+				searchParams.set('spanId', spanId);
+				history.replace({ search: searchParams.toString() });
+			}
+		},
+		[history, search],
+	);
+
+	const { data, isFetching, error } = useGetTraceFlamegraph({
+		traceId,
+		selectedSpanId: firstSpanAtFetchLevel,
+	});
+
+	const flamegraphState = useMemo(() => {
+		if (isFetching) {
+			if (data?.payload?.spans && data.payload.spans.length > 0) {
+				return TraceFlamegraphState.FETCHING_WITH_OLD_DATA;
+			}
+			return TraceFlamegraphState.LOADING;
+		}
+		if (error) {
+			return TraceFlamegraphState.ERROR;
+		}
+		if (data?.payload?.spans && data.payload.spans.length === 0) {
+			return TraceFlamegraphState.NO_DATA;
+		}
+		return TraceFlamegraphState.SUCCESS;
+	}, [error, isFetching, data]);
+
+	const spans = useMemo(() => data?.payload?.spans || [], [
+		data?.payload?.spans,
+	]);
+
+	const content = useMemo(() => {
+		switch (flamegraphState) {
+			case TraceFlamegraphState.LOADING:
+				return <div>Loading...</div>;
+			case TraceFlamegraphState.ERROR:
+				return <div>Error loading flamegraph</div>;
+			case TraceFlamegraphState.NO_DATA:
+				return <div>No data found for trace {traceId}</div>;
+			case TraceFlamegraphState.SUCCESS:
+			case TraceFlamegraphState.FETCHING_WITH_OLD_DATA:
+				return (
+					<FlamegraphCanvas
+						spans={spans}
+						firstSpanAtFetchLevel={firstSpanAtFetchLevel}
+						setFirstSpanAtFetchLevel={setFirstSpanAtFetchLevel}
+						onSpanClick={handleSpanClick}
+						traceMetadata={{
+							startTime: data?.payload?.startTimestampMillis || 0,
+							endTime: data?.payload?.endTimestampMillis || 0,
+						}}
+					/>
+				);
+			default:
+				return <div>Fetching the trace...</div>;
+		}
+	}, [
+		data?.payload?.endTimestampMillis,
+		data?.payload?.startTimestampMillis,
+		firstSpanAtFetchLevel,
+		flamegraphState,
+		spans,
+		traceId,
+		handleSpanClick,
+	]);
+
+	return <>{content}</>;
+}
+
+export default TraceFlamegraph;
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/drawUtils.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/drawUtils.test.ts
@@ -0,0 +1,525 @@
+import { DASHED_BORDER_LINE_DASH, MIN_WIDTH_FOR_NAME } from '../constants';
+import type { FlamegraphRowMetrics } from '../utils';
+import { getFlamegraphRowMetrics } from '../utils';
+import { drawEventDot, drawSpanBar } from '../utils';
+import { MOCK_SPAN } from './testUtils';
+
+jest.mock('container/TraceDetail/utils', () => ({
+	convertTimeToRelevantUnit: (): { time: number; timeUnitName: string } => ({
+		time: 50,
+		timeUnitName: 'ms',
+	}),
+}));
+
+/** Minimal 2D context for createStripePattern's internal canvas (jsdom getContext often returns null) */
+const mockPatternCanvasCtx = {
+	beginPath: jest.fn(),
+	moveTo: jest.fn(),
+	lineTo: jest.fn(),
+	stroke: jest.fn(),
+	globalAlpha: 1,
+};
+
+const originalCreateElement = document.createElement.bind(document);
+document.createElement = function (
+	tagName: string,
+): ReturnType<typeof originalCreateElement> {
+	const el = originalCreateElement(tagName);
+	if (tagName.toLowerCase() === 'canvas') {
+		(el as HTMLCanvasElement).getContext = (() =>
+			mockPatternCanvasCtx as unknown) as HTMLCanvasElement['getContext'];
+	}
+	return el;
+};
+
+function createMockCtx(): jest.Mocked<CanvasRenderingContext2D> {
+	return ({
+		beginPath: jest.fn(),
+		roundRect: jest.fn(),
+		fill: jest.fn(),
+		stroke: jest.fn(),
+		save: jest.fn(),
+		restore: jest.fn(),
+		translate: jest.fn(),
+		rotate: jest.fn(),
+		fillRect: jest.fn(),
+		strokeRect: jest.fn(),
+		setLineDash: jest.fn(),
+		measureText: jest.fn(
+			(text: string) => ({ width: text.length * 6 } as TextMetrics),
+		),
+		createPattern: jest.fn(() => ({} as CanvasPattern)),
+		clip: jest.fn(),
+		rect: jest.fn(),
+		fillText: jest.fn(),
+		font: '',
+		fillStyle: '',
+		strokeStyle: '',
+		textAlign: '',
+		textBaseline: '',
+		lineWidth: 0,
+		globalAlpha: 1,
+	} as unknown) as jest.Mocked<CanvasRenderingContext2D>;
+}
+
+const METRICS: FlamegraphRowMetrics = getFlamegraphRowMetrics(24);
+
+describe('Canvas Draw Utils', () => {
+	describe('drawSpanBar', () => {
+		it('draws rect + fill for normal span (no selected/hovered)', () => {
+			const ctx = createMockCtx();
+			const spanRectsArray: {
+				span: typeof MOCK_SPAN;
+				x: number;
+				y: number;
+				width: number;
+				height: number;
+				level: number;
+			}[] = [];
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, event: [] },
+				x: 10,
+				y: 0,
+				width: 100,
+				levelIndex: 0,
+				spanRectsArray,
+				color: '#1890ff',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.beginPath).toHaveBeenCalled();
+			expect(ctx.roundRect).toHaveBeenCalledWith(10, 1, 100, 22, 2);
+			expect(ctx.fill).toHaveBeenCalled();
+			expect(ctx.stroke).not.toHaveBeenCalled();
+			expect(spanRectsArray).toHaveLength(1);
+			expect(spanRectsArray[0]).toMatchObject({
+				x: 10,
+				y: 1,
+				width: 100,
+				height: 22,
+				level: 0,
+			});
+		});
+
+		it('uses stripe pattern + dashed stroke + 2px when selected', () => {
+			const ctx = createMockCtx();
+			const spanRectsArray: {
+				span: typeof MOCK_SPAN;
+				x: number;
+				y: number;
+				width: number;
+				height: number;
+				level: number;
+			}[] = [];
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, spanId: 'sel', event: [] },
+				x: 20,
+				y: 0,
+				width: 80,
+				levelIndex: 1,
+				spanRectsArray,
+				color: '#2F80ED',
+				isDarkMode: false,
+				metrics: METRICS,
+				selectedSpanId: 'sel',
+			});
+
+			expect(ctx.createPattern).toHaveBeenCalled();
+			expect(ctx.setLineDash).toHaveBeenCalledWith(DASHED_BORDER_LINE_DASH);
+			expect(ctx.strokeStyle).toBe('#2F80ED');
+			expect(ctx.lineWidth).toBe(2);
+			expect(ctx.stroke).toHaveBeenCalled();
+			expect(ctx.setLineDash).toHaveBeenLastCalledWith([]);
+		});
+
+		it('uses stripe pattern + solid stroke + 1px when hovered (not selected)', () => {
+			const ctx = createMockCtx();
+			const spanRectsArray: {
+				span: typeof MOCK_SPAN;
+				x: number;
+				y: number;
+				width: number;
+				height: number;
+				level: number;
+			}[] = [];
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, spanId: 'hov', event: [] },
+				x: 30,
+				y: 0,
+				width: 60,
+				levelIndex: 0,
+				spanRectsArray,
+				color: '#2F80ED',
+				isDarkMode: false,
+				metrics: METRICS,
+				hoveredSpanId: 'hov',
+			});
+
+			expect(ctx.createPattern).toHaveBeenCalled();
+			expect(ctx.setLineDash).not.toHaveBeenCalled();
+			expect(ctx.lineWidth).toBe(1);
+			expect(ctx.stroke).toHaveBeenCalled();
+		});
+
+		it('pushes spanRectsArray with correct dimensions', () => {
+			const ctx = createMockCtx();
+			const spanRectsArray: {
+				span: typeof MOCK_SPAN;
+				x: number;
+				y: number;
+				width: number;
+				height: number;
+				level: number;
+			}[] = [];
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, spanId: 'rect-test', event: [] },
+				x: 5,
+				y: 24,
+				width: 200,
+				levelIndex: 2,
+				spanRectsArray,
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(spanRectsArray[0]).toMatchObject({
+				x: 5,
+				y: 25,
+				width: 200,
+				height: 22,
+				level: 2,
+			});
+			expect(spanRectsArray[0].span.spanId).toBe('rect-test');
+		});
+	});
+
+	describe('drawSpanLabel (via drawSpanBar)', () => {
+		it('skips label when width < MIN_WIDTH_FOR_NAME', () => {
+			const ctx = createMockCtx();
+			const spanRectsArray: {
+				span: typeof MOCK_SPAN;
+				x: number;
+				y: number;
+				width: number;
+				height: number;
+				level: number;
+			}[] = [];
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, name: 'long-span-name', event: [] },
+				x: 0,
+				y: 0,
+				width: MIN_WIDTH_FOR_NAME - 1,
+				levelIndex: 0,
+				spanRectsArray,
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.clip).not.toHaveBeenCalled();
+			expect(ctx.fillText).not.toHaveBeenCalled();
+		});
+
+		it('draws name only when width >= MIN_WIDTH_FOR_NAME but < MIN_WIDTH_FOR_NAME_AND_DURATION', () => {
+			const ctx = createMockCtx();
+			ctx.measureText = jest.fn(
+				(t: string) => ({ width: t.length * 6 } as TextMetrics),
+			);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, name: 'foo', event: [] },
+				x: 0,
+				y: 0,
+				width: 50,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.clip).toHaveBeenCalled();
+			expect(ctx.fillText).toHaveBeenCalled();
+			expect(ctx.textAlign).toBe('left');
+		});
+
+		it('draws name + duration when width >= MIN_WIDTH_FOR_NAME_AND_DURATION', () => {
+			const ctx = createMockCtx();
+			ctx.measureText = jest.fn(
+				(t: string) => ({ width: t.length * 6 } as TextMetrics),
+			);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, name: 'my-span', event: [] },
+				x: 0,
+				y: 0,
+				width: 100,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.fillText).toHaveBeenCalledTimes(2);
+			expect(ctx.fillText).toHaveBeenCalledWith(
+				'50ms',
+				expect.any(Number),
+				expect.any(Number),
+			);
+			expect(ctx.fillText).toHaveBeenCalledWith(
+				'my-span',
+				expect.any(Number),
+				expect.any(Number),
+			);
+		});
+	});
+
+	describe('truncateText (via drawSpanBar)', () => {
+		it('uses full text when it fits', () => {
+			const ctx = createMockCtx();
+			ctx.measureText = jest.fn(
+				(t: string) => ({ width: t.length * 4 } as TextMetrics),
+			);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, name: 'short', event: [] },
+				x: 0,
+				y: 0,
+				width: 100,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.fillText).toHaveBeenCalledWith(
+				'short',
+				expect.any(Number),
+				expect.any(Number),
+			);
+		});
+
+		it('truncates text when it exceeds available width', () => {
+			const ctx = createMockCtx();
+			ctx.measureText = jest.fn(
+				(t: string) =>
+					({
+						width: t.includes('...') ? 24 : t.length * 10,
+					} as TextMetrics),
+			);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, name: 'very-long-span-name', event: [] },
+				x: 0,
+				y: 0,
+				width: 50,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			const fillTextCalls = (ctx.fillText as jest.Mock).mock.calls;
+			const nameArg = fillTextCalls.find((c) => c[0] !== '50ms')?.[0];
+			expect(nameArg).toBeDefined();
+			expect(nameArg).toMatch(/\.\.\.$/);
+		});
+	});
+
+	describe('drawEventDot', () => {
+		it('uses error styling when isError is true', () => {
+			const ctx = createMockCtx();
+
+			drawEventDot({
+				ctx,
+				x: 50,
+				y: 11,
+				isError: true,
+				isDarkMode: false,
+				eventDotSize: 6,
+			});
+
+			expect(ctx.save).toHaveBeenCalled();
+			expect(ctx.translate).toHaveBeenCalledWith(50, 11);
+			expect(ctx.rotate).toHaveBeenCalledWith(Math.PI / 4);
+			expect(ctx.fillStyle).toBe('rgb(220, 38, 38)');
+			expect(ctx.strokeStyle).toBe('rgb(153, 27, 27)');
+			expect(ctx.fillRect).toHaveBeenCalledWith(-3, -3, 6, 6);
+			expect(ctx.strokeRect).toHaveBeenCalledWith(-3, -3, 6, 6);
+			expect(ctx.restore).toHaveBeenCalled();
+		});
+
+		it('uses normal styling when isError is false', () => {
+			const ctx = createMockCtx();
+
+			drawEventDot({
+				ctx,
+				x: 0,
+				y: 0,
+				isError: false,
+				isDarkMode: false,
+				eventDotSize: 6,
+			});
+
+			expect(ctx.fillStyle).toBe('rgb(6, 182, 212)');
+			expect(ctx.strokeStyle).toBe('rgb(8, 145, 178)');
+		});
+
+		it('uses dark mode colors for error', () => {
+			const ctx = createMockCtx();
+
+			drawEventDot({
+				ctx,
+				x: 0,
+				y: 0,
+				isError: true,
+				isDarkMode: true,
+				eventDotSize: 6,
+			});
+
+			expect(ctx.fillStyle).toBe('rgb(239, 68, 68)');
+			expect(ctx.strokeStyle).toBe('rgb(185, 28, 28)');
+		});
+
+		it('uses dark mode colors for non-error', () => {
+			const ctx = createMockCtx();
+
+			drawEventDot({
+				ctx,
+				x: 0,
+				y: 0,
+				isError: false,
+				isDarkMode: true,
+				eventDotSize: 6,
+			});
+
+			expect(ctx.fillStyle).toBe('rgb(14, 165, 233)');
+			expect(ctx.strokeStyle).toBe('rgb(2, 132, 199)');
+		});
+
+		it('calls save, translate, rotate, restore', () => {
+			const ctx = createMockCtx();
+
+			drawEventDot({
+				ctx,
+				x: 10,
+				y: 20,
+				isError: false,
+				isDarkMode: false,
+				eventDotSize: 4,
+			});
+
+			expect(ctx.save).toHaveBeenCalled();
+			expect(ctx.translate).toHaveBeenCalledWith(10, 20);
+			expect(ctx.rotate).toHaveBeenCalledWith(Math.PI / 4);
+			expect(ctx.restore).toHaveBeenCalled();
+		});
+	});
+
+	describe('createStripePattern (via drawSpanBar)', () => {
+		it('uses pattern when createPattern returns non-null', () => {
+			const ctx = createMockCtx();
+			const mockPattern = {} as CanvasPattern;
+			(ctx.createPattern as jest.Mock).mockReturnValue(mockPattern);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, spanId: 'p', event: [] },
+				x: 0,
+				y: 0,
+				width: MIN_WIDTH_FOR_NAME - 1,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+				hoveredSpanId: 'p',
+			});
+
+			expect(ctx.createPattern).toHaveBeenCalled();
+			expect(ctx.fillStyle).toBe(mockPattern);
+			expect(ctx.fill).toHaveBeenCalled();
+		});
+
+		it('skips fill when createPattern returns null', () => {
+			const ctx = createMockCtx();
+			(ctx.createPattern as jest.Mock).mockReturnValue(null);
+
+			drawSpanBar({
+				ctx,
+				span: { ...MOCK_SPAN, spanId: 'p', event: [] },
+				x: 0,
+				y: 0,
+				width: MIN_WIDTH_FOR_NAME - 1,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+				selectedSpanId: 'p',
+			});
+
+			expect(ctx.fill).not.toHaveBeenCalled();
+			expect(ctx.stroke).toHaveBeenCalled();
+		});
+	});
+
+	describe('drawSpanBar with events', () => {
+		it('draws event dots for each span event', () => {
+			const ctx = createMockCtx();
+			const spanWithEvents = {
+				...MOCK_SPAN,
+				event: [
+					{
+						name: 'e1',
+						timeUnixNano: 1_010_000_000,
+						attributeMap: {},
+						isError: false,
+					},
+					{
+						name: 'e2',
+						timeUnixNano: 1_025_000_000,
+						attributeMap: {},
+						isError: true,
+					},
+				],
+			};
+
+			drawSpanBar({
+				ctx,
+				span: spanWithEvents,
+				x: 0,
+				y: 0,
+				width: 100,
+				levelIndex: 0,
+				spanRectsArray: [],
+				color: '#000',
+				isDarkMode: false,
+				metrics: METRICS,
+			});
+
+			expect(ctx.save).toHaveBeenCalledTimes(3);
+			expect(ctx.translate).toHaveBeenCalledTimes(2);
+			expect(ctx.fillRect).toHaveBeenCalledTimes(2);
+		});
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/testUtils.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/testUtils.ts
@@ -0,0 +1,54 @@
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+/** Minimal FlamegraphSpan for unit tests */
+export const MOCK_SPAN: FlamegraphSpan = {
+	timestamp: 1000,
+	durationNano: 50_000_000, // 50ms
+	spanId: 'span-1',
+	parentSpanId: '',
+	traceId: 'trace-1',
+	hasError: false,
+	serviceName: 'test-service',
+	name: 'test-span',
+	level: 0,
+	event: [],
+};
+
+/** Nested spans structure for findSpanById tests */
+export const MOCK_SPANS: FlamegraphSpan[][] = [
+	[
+		{
+			...MOCK_SPAN,
+			spanId: 'root',
+			parentSpanId: '',
+			level: 0,
+		},
+	],
+	[
+		{
+			...MOCK_SPAN,
+			spanId: 'child-a',
+			parentSpanId: 'root',
+			level: 1,
+		},
+		{
+			...MOCK_SPAN,
+			spanId: 'child-b',
+			parentSpanId: 'root',
+			level: 1,
+		},
+	],
+	[
+		{
+			...MOCK_SPAN,
+			spanId: 'grandchild',
+			parentSpanId: 'child-a',
+			level: 2,
+		},
+	],
+];
+
+export const MOCK_TRACE_METADATA = {
+	startTime: 0,
+	endTime: 1000,
+};
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphDrag.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphDrag.test.ts
@@ -0,0 +1,196 @@
+import React from 'react';
+import { act, renderHook } from '@testing-library/react';
+
+import { useFlamegraphDrag } from '../hooks/useFlamegraphDrag';
+import { MOCK_TRACE_METADATA } from './testUtils';
+
+function createMockCanvas(): HTMLCanvasElement {
+	const canvas = document.createElement('canvas');
+	canvas.getBoundingClientRect = jest.fn(
+		(): DOMRect =>
+			({
+				left: 0,
+				top: 0,
+				width: 800,
+				height: 400,
+				x: 0,
+				y: 0,
+				bottom: 400,
+				right: 800,
+				toJSON: (): Record<string, unknown> => ({}),
+			} as DOMRect),
+	);
+	return canvas;
+}
+
+function createMockContainer(): HTMLDivElement {
+	const div = document.createElement('div');
+	Object.defineProperty(div, 'clientHeight', { value: 400 });
+	return div;
+}
+
+const defaultArgs = {
+	canvasRef: { current: createMockCanvas() },
+	containerRef: { current: createMockContainer() },
+	traceMetadata: MOCK_TRACE_METADATA,
+	viewStartRef: { current: 0 },
+	viewEndRef: { current: 1000 },
+	setViewStartTs: jest.fn(),
+	setViewEndTs: jest.fn(),
+	scrollTopRef: { current: 0 },
+	setScrollTop: jest.fn(),
+	totalHeight: 1000,
+};
+
+describe('useFlamegraphDrag', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		defaultArgs.viewStartRef.current = 0;
+		defaultArgs.viewEndRef.current = 1000;
+		defaultArgs.scrollTopRef.current = 0;
+	});
+
+	it('starts drag state on mousedown', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		expect(result.current.isDraggingRef.current).toBe(true);
+	});
+
+	it('ignores non-left button mousedown', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 1,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		expect(result.current.isDraggingRef.current).toBe(false);
+	});
+
+	it('updates pan/scroll on mousemove', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseMove(({
+				clientX: 150,
+				clientY: 100,
+			} as unknown) as React.MouseEvent);
+		});
+
+		expect(defaultArgs.setViewStartTs).toHaveBeenCalled();
+		expect(defaultArgs.setViewEndTs).toHaveBeenCalled();
+		expect(defaultArgs.setScrollTop).toHaveBeenCalled();
+	});
+
+	it('does not set suppressClickRef when movement is below threshold', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseMove(({
+				clientX: 102,
+				clientY: 51,
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseUp();
+		});
+
+		expect(result.current.suppressClickRef.current).toBe(false);
+	});
+
+	it('sets suppressClickRef when drag exceeds threshold', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseMove(({
+				clientX: 150,
+				clientY: 100,
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseUp();
+		});
+
+		expect(result.current.suppressClickRef.current).toBe(true);
+	});
+
+	it('resets drag state on mouseup', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleMouseUp();
+		});
+
+		expect(result.current.isDraggingRef.current).toBe(false);
+	});
+
+	it('cancels drag on mouseleave', () => {
+		const { result } = renderHook(() => useFlamegraphDrag(defaultArgs));
+
+		act(() => {
+			result.current.handleMouseDown(({
+				button: 0,
+				clientX: 100,
+				clientY: 50,
+				preventDefault: jest.fn(),
+			} as unknown) as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleDragMouseLeave();
+		});
+
+		expect(result.current.isDraggingRef.current).toBe(false);
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphHover.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphHover.test.ts
@@ -0,0 +1,174 @@
+import type React from 'react';
+import { act, renderHook } from '@testing-library/react';
+
+import { useFlamegraphHover } from '../hooks/useFlamegraphHover';
+import type { SpanRect } from '../types';
+import { MOCK_SPAN, MOCK_TRACE_METADATA } from './testUtils';
+
+function createMockCanvas(): HTMLCanvasElement {
+	const canvas = document.createElement('canvas');
+	canvas.width = 800;
+	canvas.height = 400;
+	canvas.getBoundingClientRect = jest.fn(
+		(): DOMRect =>
+			({
+				left: 0,
+				top: 0,
+				width: 800,
+				height: 400,
+				x: 0,
+				y: 0,
+				bottom: 400,
+				right: 800,
+				toJSON: (): Record<string, unknown> => ({}),
+			} as DOMRect),
+	);
+	return canvas;
+}
+
+const spanRect: SpanRect = {
+	span: { ...MOCK_SPAN, spanId: 'hover-span', name: 'test-span' },
+	x: 100,
+	y: 50,
+	width: 200,
+	height: 22,
+	level: 0,
+};
+
+const defaultArgs = {
+	canvasRef: { current: createMockCanvas() },
+	spanRectsRef: { current: [spanRect] },
+	traceMetadata: MOCK_TRACE_METADATA,
+	viewStartTs: MOCK_TRACE_METADATA.startTime,
+	viewEndTs: MOCK_TRACE_METADATA.endTime,
+	isDraggingRef: { current: false },
+	suppressClickRef: { current: false },
+	onSpanClick: jest.fn(),
+	isDarkMode: false,
+};
+
+describe('useFlamegraphHover', () => {
+	beforeEach(() => {
+		Object.defineProperty(window, 'devicePixelRatio', {
+			configurable: true,
+			value: 1,
+		});
+		jest.clearAllMocks();
+		defaultArgs.spanRectsRef.current = [spanRect];
+		defaultArgs.isDraggingRef.current = false;
+		defaultArgs.suppressClickRef.current = false;
+	});
+
+	it('sets hoveredSpanId and tooltipContent when hovering on span', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		expect(result.current.hoveredSpanId).toBe('hover-span');
+		expect(result.current.tooltipContent).not.toBeNull();
+		expect(result.current.tooltipContent?.spanName).toBe('test-span');
+		expect(result.current.tooltipContent?.clientX).toBe(150);
+		expect(result.current.tooltipContent?.clientY).toBe(61);
+	});
+
+	it('clears hover when moving to empty area', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		expect(result.current.hoveredSpanId).toBe('hover-span');
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 10,
+				clientY: 10,
+			} as React.MouseEvent);
+		});
+
+		expect(result.current.hoveredSpanId).toBeNull();
+		expect(result.current.tooltipContent).toBeNull();
+	});
+
+	it('clears hover on mouse leave', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		act(() => {
+			result.current.handleHoverMouseLeave();
+		});
+
+		expect(result.current.hoveredSpanId).toBeNull();
+		expect(result.current.tooltipContent).toBeNull();
+	});
+
+	it('suppresses click when suppressClickRef is set', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+		defaultArgs.suppressClickRef.current = true;
+
+		act(() => {
+			result.current.handleClick({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		expect(defaultArgs.onSpanClick).not.toHaveBeenCalled();
+	});
+
+	it('calls onSpanClick when clicking on span', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+
+		act(() => {
+			result.current.handleClick({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		expect(defaultArgs.onSpanClick).toHaveBeenCalledWith('hover-span');
+	});
+
+	it('uses clientX/clientY for tooltip positioning', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 200,
+				clientY: 60,
+			} as React.MouseEvent);
+		});
+
+		expect(result.current.tooltipContent?.clientX).toBe(200);
+		expect(result.current.tooltipContent?.clientY).toBe(60);
+	});
+
+	it('does not update hover during drag', () => {
+		const { result } = renderHook(() => useFlamegraphHover(defaultArgs));
+		defaultArgs.isDraggingRef.current = true;
+
+		act(() => {
+			result.current.handleHoverMouseMove({
+				clientX: 150,
+				clientY: 61,
+			} as React.MouseEvent);
+		});
+
+		expect(result.current.hoveredSpanId).toBeNull();
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphZoom.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useFlamegraphZoom.test.ts
@@ -0,0 +1,279 @@
+import { act, renderHook } from '@testing-library/react';
+
+import { DEFAULT_ROW_HEIGHT, MIN_VISIBLE_SPAN_MS } from '../constants';
+import { useFlamegraphZoom } from '../hooks/useFlamegraphZoom';
+import { MOCK_TRACE_METADATA } from './testUtils';
+
+function createMockCanvas(): HTMLCanvasElement {
+	const canvas = document.createElement('canvas');
+	canvas.width = 800;
+	canvas.height = 400;
+	canvas.getBoundingClientRect = jest.fn(
+		(): DOMRect =>
+			({
+				left: 0,
+				top: 0,
+				width: 800,
+				height: 400,
+				x: 0,
+				y: 0,
+				bottom: 400,
+				right: 800,
+				toJSON: (): Record<string, unknown> => ({}),
+			} as DOMRect),
+	);
+	return canvas;
+}
+
+describe('useFlamegraphZoom', () => {
+	const traceMetadata = { ...MOCK_TRACE_METADATA };
+
+	beforeEach(() => {
+		Object.defineProperty(window, 'devicePixelRatio', {
+			configurable: true,
+			value: 1,
+		});
+	});
+
+	it('handleResetZoom restores traceMetadata.startTime/endTime', () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setRowHeight = jest.fn();
+		const viewStartRef = { current: 100 };
+		const viewEndRef = { current: 500 };
+		const rowHeightRef = { current: 30 };
+		const canvasRef = { current: createMockCanvas() };
+
+		const { result } = renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef,
+				viewEndRef,
+				rowHeightRef,
+				setViewStartTs,
+				setViewEndTs,
+				setRowHeight,
+			}),
+		);
+
+		act(() => {
+			result.current.handleResetZoom();
+		});
+
+		expect(setViewStartTs).toHaveBeenCalledWith(traceMetadata.startTime);
+		expect(setViewEndTs).toHaveBeenCalledWith(traceMetadata.endTime);
+		expect(setRowHeight).toHaveBeenCalledWith(DEFAULT_ROW_HEIGHT);
+		expect(viewStartRef.current).toBe(traceMetadata.startTime);
+		expect(viewEndRef.current).toBe(traceMetadata.endTime);
+		expect(rowHeightRef.current).toBe(DEFAULT_ROW_HEIGHT);
+	});
+
+	it('wheel zoom in decreases visible time range', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setRowHeight = jest.fn();
+		const viewStartRef = { current: traceMetadata.startTime };
+		const viewEndRef = { current: traceMetadata.endTime };
+		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
+		const canvas = createMockCanvas();
+		const canvasRef = { current: canvas };
+
+		renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef,
+				viewEndRef,
+				rowHeightRef,
+				setViewStartTs,
+				setViewEndTs,
+				setRowHeight,
+			}),
+		);
+
+		const initialSpan = viewEndRef.current - viewStartRef.current;
+
+		await act(async () => {
+			canvas.dispatchEvent(
+				new WheelEvent('wheel', {
+					clientX: 400,
+					deltaY: -100,
+					bubbles: true,
+				}),
+			);
+		});
+
+		await act(async () => {
+			await new Promise((r) => requestAnimationFrame(r));
+		});
+
+		expect(setViewStartTs).toHaveBeenCalled();
+		expect(setViewEndTs).toHaveBeenCalled();
+		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
+		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
+		if (newStart != null && newEnd != null) {
+			const newSpan = newEnd - newStart;
+			expect(newSpan).toBeLessThan(initialSpan);
+		}
+	});
+
+	it('wheel zoom out increases visible time range', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setRowHeight = jest.fn();
+		const halfSpan = (traceMetadata.endTime - traceMetadata.startTime) / 2;
+		const viewStartRef = { current: traceMetadata.startTime + halfSpan * 0.25 };
+		const viewEndRef = { current: traceMetadata.startTime + halfSpan * 0.75 };
+		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
+		const canvas = createMockCanvas();
+		const canvasRef = { current: canvas };
+
+		renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef,
+				viewEndRef,
+				rowHeightRef,
+				setViewStartTs,
+				setViewEndTs,
+				setRowHeight,
+			}),
+		);
+
+		const initialSpan = viewEndRef.current - viewStartRef.current;
+
+		await act(async () => {
+			canvas.dispatchEvent(
+				new WheelEvent('wheel', {
+					clientX: 400,
+					deltaY: 100,
+					bubbles: true,
+				}),
+			);
+		});
+
+		await act(async () => {
+			await new Promise((r) => requestAnimationFrame(r));
+		});
+
+		expect(setViewStartTs).toHaveBeenCalled();
+		expect(setViewEndTs).toHaveBeenCalled();
+		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
+		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
+		if (newStart != null && newEnd != null) {
+			const newSpan = newEnd - newStart;
+			expect(newSpan).toBeGreaterThanOrEqual(initialSpan);
+		}
+	});
+
+	it('clamps zoom to MIN_VISIBLE_SPAN_MS', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setRowHeight = jest.fn();
+		const viewStartRef = { current: traceMetadata.startTime };
+		const viewEndRef = { current: traceMetadata.startTime + 100 };
+		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
+		const canvas = createMockCanvas();
+		const canvasRef = { current: canvas };
+
+		renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef,
+				viewEndRef,
+				rowHeightRef,
+				setViewStartTs,
+				setViewEndTs,
+				setRowHeight,
+			}),
+		);
+
+		await act(async () => {
+			canvas.dispatchEvent(
+				new WheelEvent('wheel', {
+					clientX: 400,
+					deltaY: 10000,
+					bubbles: true,
+				}),
+			);
+		});
+
+		await act(async () => {
+			await new Promise((r) => requestAnimationFrame(r));
+		});
+
+		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
+		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
+		if (newStart != null && newEnd != null) {
+			const newSpan = newEnd - newStart;
+			expect(newSpan).toBeGreaterThanOrEqual(MIN_VISIBLE_SPAN_MS);
+		}
+	});
+
+	it('clamps viewStart/viewEnd to trace bounds', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setRowHeight = jest.fn();
+		const viewStartRef = { current: traceMetadata.startTime };
+		const viewEndRef = { current: traceMetadata.endTime };
+		const rowHeightRef = { current: DEFAULT_ROW_HEIGHT };
+		const canvas = createMockCanvas();
+		const canvasRef = { current: canvas };
+
+		renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef,
+				viewEndRef,
+				rowHeightRef,
+				setViewStartTs,
+				setViewEndTs,
+				setRowHeight,
+			}),
+		);
+
+		await act(async () => {
+			canvas.dispatchEvent(
+				new WheelEvent('wheel', {
+					clientX: 400,
+					deltaY: -5000,
+					bubbles: true,
+				}),
+			);
+		});
+
+		await act(async () => {
+			await new Promise((r) => requestAnimationFrame(r));
+		});
+
+		const [newStart] = setViewStartTs.mock.calls[0] ?? [];
+		const [newEnd] = setViewEndTs.mock.calls[0] ?? [];
+		if (newStart != null && newEnd != null) {
+			expect(newStart).toBeGreaterThanOrEqual(traceMetadata.startTime);
+			expect(newEnd).toBeLessThanOrEqual(traceMetadata.endTime);
+		}
+	});
+
+	it('returns isOverFlamegraphRef', () => {
+		const canvasRef = { current: createMockCanvas() };
+		const { result } = renderHook(() =>
+			useFlamegraphZoom({
+				canvasRef,
+				traceMetadata,
+				viewStartRef: { current: 0 },
+				viewEndRef: { current: 1000 },
+				rowHeightRef: { current: 24 },
+				setViewStartTs: jest.fn(),
+				setViewEndTs: jest.fn(),
+				setRowHeight: jest.fn(),
+			}),
+		);
+
+		expect(result.current.isOverFlamegraphRef).toBeDefined();
+		expect(result.current.isOverFlamegraphRef.current).toBe(false);
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useScrollToSpan.test.tsx
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/useScrollToSpan.test.tsx
@@ -0,0 +1,212 @@
+import type { Dispatch, SetStateAction } from 'react';
+import { useRef } from 'react';
+import { act, render, waitFor } from '@testing-library/react';
+
+import { useScrollToSpan } from '../hooks/useScrollToSpan';
+import { MOCK_SPANS, MOCK_TRACE_METADATA } from './testUtils';
+
+function TestWrapper({
+	firstSpanAtFetchLevel,
+	spans,
+	traceMetadata,
+	setViewStartTs,
+	setViewEndTs,
+	setScrollTop,
+}: {
+	firstSpanAtFetchLevel: string;
+	spans: typeof MOCK_SPANS;
+	traceMetadata: typeof MOCK_TRACE_METADATA;
+	setViewStartTs: Dispatch<SetStateAction<number>>;
+	setViewEndTs: Dispatch<SetStateAction<number>>;
+	setScrollTop: Dispatch<SetStateAction<number>>;
+}): JSX.Element {
+	const containerRef = useRef<HTMLDivElement>(null);
+	const viewStartRef = useRef(traceMetadata.startTime);
+	const viewEndRef = useRef(traceMetadata.endTime);
+	const scrollTopRef = useRef(0);
+
+	useScrollToSpan({
+		firstSpanAtFetchLevel,
+		spans,
+		traceMetadata,
+		containerRef,
+		viewStartRef,
+		viewEndRef,
+		scrollTopRef,
+		rowHeight: 24,
+		setViewStartTs,
+		setViewEndTs,
+		setScrollTop,
+	});
+
+	return <div ref={containerRef} data-testid="container" />;
+}
+
+describe('useScrollToSpan', () => {
+	beforeEach(() => {
+		Object.defineProperty(HTMLElement.prototype, 'clientHeight', {
+			configurable: true,
+			value: 400,
+		});
+	});
+
+	it('does not update when firstSpanAtFetchLevel is empty', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setScrollTop = jest.fn();
+
+		render(
+			<TestWrapper
+				firstSpanAtFetchLevel=""
+				spans={MOCK_SPANS}
+				traceMetadata={MOCK_TRACE_METADATA}
+				setViewStartTs={setViewStartTs}
+				setViewEndTs={setViewEndTs}
+				setScrollTop={setScrollTop}
+			/>,
+		);
+
+		await waitFor(() => {
+			expect(setViewStartTs).not.toHaveBeenCalled();
+			expect(setViewEndTs).not.toHaveBeenCalled();
+			expect(setScrollTop).not.toHaveBeenCalled();
+		});
+	});
+
+	it('does not update when spans are empty', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setScrollTop = jest.fn();
+
+		render(
+			<TestWrapper
+				firstSpanAtFetchLevel="root"
+				spans={[]}
+				traceMetadata={MOCK_TRACE_METADATA}
+				setViewStartTs={setViewStartTs}
+				setViewEndTs={setViewEndTs}
+				setScrollTop={setScrollTop}
+			/>,
+		);
+
+		await waitFor(() => {
+			expect(setViewStartTs).not.toHaveBeenCalled();
+			expect(setViewEndTs).not.toHaveBeenCalled();
+			expect(setScrollTop).not.toHaveBeenCalled();
+		});
+	});
+
+	it('does not update when target span not found', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setScrollTop = jest.fn();
+
+		render(
+			<TestWrapper
+				firstSpanAtFetchLevel="nonexistent"
+				spans={MOCK_SPANS}
+				traceMetadata={MOCK_TRACE_METADATA}
+				setViewStartTs={setViewStartTs}
+				setViewEndTs={setViewEndTs}
+				setScrollTop={setScrollTop}
+			/>,
+		);
+
+		await waitFor(() => {
+			expect(setViewStartTs).not.toHaveBeenCalled();
+			expect(setViewEndTs).not.toHaveBeenCalled();
+			expect(setScrollTop).not.toHaveBeenCalled();
+		});
+	});
+
+	it('calls setters when target span found', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+		const setScrollTop = jest.fn();
+
+		const { getByTestId } = render(
+			<TestWrapper
+				firstSpanAtFetchLevel="grandchild"
+				spans={MOCK_SPANS}
+				traceMetadata={MOCK_TRACE_METADATA}
+				setViewStartTs={setViewStartTs}
+				setViewEndTs={setViewEndTs}
+				setScrollTop={setScrollTop}
+			/>,
+		);
+
+		expect(getByTestId('container')).toBeInTheDocument();
+
+		await waitFor(() => {
+			expect(setViewStartTs).toHaveBeenCalled();
+			expect(setViewEndTs).toHaveBeenCalled();
+			expect(setScrollTop).toHaveBeenCalled();
+		});
+
+		const [viewStart] = setViewStartTs.mock.calls[0];
+		const [viewEnd] = setViewEndTs.mock.calls[0];
+		const [scrollTop] = setScrollTop.mock.calls[0];
+
+		expect(viewEnd - viewStart).toBeGreaterThan(0);
+		expect(viewStart).toBeGreaterThanOrEqual(MOCK_TRACE_METADATA.startTime);
+		expect(viewEnd).toBeLessThanOrEqual(MOCK_TRACE_METADATA.endTime);
+		expect(scrollTop).toBeGreaterThanOrEqual(0);
+	});
+
+	it('centers span vertically (scrollTop centers span row)', async () => {
+		const setScrollTop = jest.fn();
+
+		await act(async () => {
+			render(
+				<TestWrapper
+					firstSpanAtFetchLevel="grandchild"
+					spans={MOCK_SPANS}
+					traceMetadata={MOCK_TRACE_METADATA}
+					setViewStartTs={jest.fn()}
+					setViewEndTs={jest.fn()}
+					setScrollTop={setScrollTop}
+				/>,
+			);
+		});
+
+		await waitFor(() => expect(setScrollTop).toHaveBeenCalled());
+
+		const [scrollTop] = setScrollTop.mock.calls[0];
+		const levelIndex = 2;
+		const rowHeight = 24;
+		const viewportHeight = 400;
+		const expectedCenter =
+			levelIndex * rowHeight - viewportHeight / 2 + rowHeight / 2;
+		expect(scrollTop).toBeCloseTo(Math.max(0, expectedCenter), -1);
+	});
+
+	it('zooms horizontally to span with 2x duration padding', async () => {
+		const setViewStartTs = jest.fn();
+		const setViewEndTs = jest.fn();
+
+		await act(async () => {
+			render(
+				<TestWrapper
+					firstSpanAtFetchLevel="root"
+					spans={MOCK_SPANS}
+					traceMetadata={MOCK_TRACE_METADATA}
+					setViewStartTs={setViewStartTs}
+					setViewEndTs={setViewEndTs}
+					setScrollTop={jest.fn()}
+				/>,
+			);
+		});
+
+		await waitFor(() => {
+			expect(setViewStartTs).toHaveBeenCalled();
+			expect(setViewEndTs).toHaveBeenCalled();
+		});
+
+		const [viewStart] = setViewStartTs.mock.calls[0];
+		const [viewEnd] = setViewEndTs.mock.calls[0];
+		const visibleWindow = viewEnd - viewStart;
+		const rootSpan = MOCK_SPANS[0][0];
+		const spanDurationMs = rootSpan.durationNano / 1e6;
+		expect(visibleWindow).toBeGreaterThanOrEqual(Math.max(spanDurationMs * 2, 5));
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/utils.math.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/utils.math.test.ts
@@ -0,0 +1,135 @@
+import {
+	clamp,
+	findSpanById,
+	formatDuration,
+	getFlamegraphRowMetrics,
+} from '../utils';
+import { MOCK_SPANS } from './testUtils';
+
+jest.mock('container/TraceDetail/utils', () => ({
+	convertTimeToRelevantUnit: (
+		valueMs: number,
+	): { time: number; timeUnitName: string } => {
+		if (valueMs === 0) {
+			return { time: 0, timeUnitName: 'ms' };
+		}
+		if (valueMs < 1) {
+			return { time: valueMs, timeUnitName: 'ms' };
+		}
+		if (valueMs < 1000) {
+			return { time: valueMs, timeUnitName: 'ms' };
+		}
+		if (valueMs < 60_000) {
+			return { time: valueMs / 1000, timeUnitName: 's' };
+		}
+		if (valueMs < 3_600_000) {
+			return { time: valueMs / 60_000, timeUnitName: 'm' };
+		}
+		return { time: valueMs / 3_600_000, timeUnitName: 'hr' };
+	},
+}));
+
+describe('Pure Math and Data Utils', () => {
+	describe('clamp', () => {
+		it('returns value when within range', () => {
+			expect(clamp(5, 0, 10)).toBe(5);
+			expect(clamp(-3, -5, 5)).toBe(-3);
+		});
+
+		it('returns min when value is below min', () => {
+			expect(clamp(-1, 0, 10)).toBe(0);
+			expect(clamp(2, 5, 10)).toBe(5);
+		});
+
+		it('returns max when value is above max', () => {
+			expect(clamp(11, 0, 10)).toBe(10);
+			expect(clamp(100, 0, 50)).toBe(50);
+		});
+
+		it('handles min === max', () => {
+			expect(clamp(5, 7, 7)).toBe(7);
+			expect(clamp(7, 7, 7)).toBe(7);
+		});
+	});
+
+	describe('findSpanById', () => {
+		it('finds span in first level', () => {
+			const result = findSpanById(MOCK_SPANS, 'root');
+			expect(result).not.toBeNull();
+			expect(result?.span.spanId).toBe('root');
+			expect(result?.levelIndex).toBe(0);
+		});
+
+		it('finds span in nested level', () => {
+			const result = findSpanById(MOCK_SPANS, 'grandchild');
+			expect(result).not.toBeNull();
+			expect(result?.span.spanId).toBe('grandchild');
+			expect(result?.levelIndex).toBe(2);
+		});
+
+		it('returns null when span not found', () => {
+			expect(findSpanById(MOCK_SPANS, 'nonexistent')).toBeNull();
+		});
+
+		it('handles empty spans', () => {
+			expect(findSpanById([], 'root')).toBeNull();
+			expect(findSpanById([[], []], 'root')).toBeNull();
+		});
+	});
+
+	describe('getFlamegraphRowMetrics', () => {
+		it('computes normal row height metrics (24px)', () => {
+			const m = getFlamegraphRowMetrics(24);
+			expect(m.ROW_HEIGHT).toBe(24);
+			expect(m.SPAN_BAR_HEIGHT).toBe(22);
+			expect(m.SPAN_BAR_Y_OFFSET).toBe(1);
+			expect(m.EVENT_DOT_SIZE).toBe(6);
+		});
+
+		it('clamps span bar height to max for large row heights', () => {
+			const m = getFlamegraphRowMetrics(100);
+			expect(m.SPAN_BAR_HEIGHT).toBe(22);
+			expect(m.SPAN_BAR_Y_OFFSET).toBe(39);
+		});
+
+		it('clamps span bar height to min for small row heights', () => {
+			const m = getFlamegraphRowMetrics(6);
+			expect(m.SPAN_BAR_HEIGHT).toBe(8);
+			// spanBarYOffset = floor((6-8)/2) = -1 when bar exceeds row height
+			expect(m.SPAN_BAR_Y_OFFSET).toBe(-1);
+		});
+
+		it('clamps event dot size within min/max', () => {
+			const mSmall = getFlamegraphRowMetrics(6);
+			expect(mSmall.EVENT_DOT_SIZE).toBe(4);
+
+			const mLarge = getFlamegraphRowMetrics(24);
+			expect(mLarge.EVENT_DOT_SIZE).toBe(6);
+		});
+	});
+
+	describe('formatDuration', () => {
+		it('formats nanos as ms', () => {
+			// 1e6 nanos = 1ms
+			expect(formatDuration(1_000_000)).toBe('1ms');
+		});
+
+		it('formats larger durations as s/m/hr', () => {
+			// 2e9 nanos = 2000ms = 2s
+			expect(formatDuration(2_000_000_000)).toBe('2s');
+		});
+
+		it('formats zero duration', () => {
+			expect(formatDuration(0)).toBe('0ms');
+		});
+
+		it('formats very small values', () => {
+			// 1000 nanos = 0.001ms → mock returns { time: 0.001, timeUnitName: 'ms' }
+			expect(formatDuration(1000)).toBe('0ms');
+		});
+
+		it('formats decimal seconds correctly', () => {
+			expect(formatDuration(1_500_000_000)).toBe('1.5s');
+		});
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/utils.presentation.test.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/tests/utils.presentation.test.ts
@@ -0,0 +1,67 @@
+import { getSpanColor } from '../utils';
+import { MOCK_SPAN } from './testUtils';
+
+const mockGenerateColor = jest.fn();
+
+jest.mock('lib/uPlotLib/utils/generateColor', () => ({
+	generateColor: (key: string, colorMap: Record<string, string>): string =>
+		mockGenerateColor(key, colorMap),
+}));
+
+describe('Presentation / Styling Utils', () => {
+	beforeEach(() => {
+		jest.clearAllMocks();
+		mockGenerateColor.mockReturnValue('#2F80ED');
+	});
+
+	describe('getSpanColor', () => {
+		it('uses generated service color for normal span', () => {
+			mockGenerateColor.mockReturnValue('#1890ff');
+
+			const color = getSpanColor({
+				span: { ...MOCK_SPAN, hasError: false },
+				isDarkMode: false,
+			});
+
+			expect(mockGenerateColor).toHaveBeenCalledWith(
+				MOCK_SPAN.serviceName,
+				expect.any(Object),
+			);
+			expect(color).toBe('#1890ff');
+		});
+
+		it('overrides with error color in light mode when span has error', () => {
+			mockGenerateColor.mockReturnValue('#1890ff');
+
+			const color = getSpanColor({
+				span: { ...MOCK_SPAN, hasError: true },
+				isDarkMode: false,
+			});
+
+			expect(color).toBe('rgb(220, 38, 38)');
+		});
+
+		it('overrides with error color in dark mode when span has error', () => {
+			mockGenerateColor.mockReturnValue('#1890ff');
+
+			const color = getSpanColor({
+				span: { ...MOCK_SPAN, hasError: true },
+				isDarkMode: true,
+			});
+
+			expect(color).toBe('rgb(239, 68, 68)');
+		});
+
+		it('passes serviceName to generateColor', () => {
+			getSpanColor({
+				span: { ...MOCK_SPAN, serviceName: 'my-service' },
+				isDarkMode: false,
+			});
+
+			expect(mockGenerateColor).toHaveBeenCalledWith(
+				'my-service',
+				expect.any(Object),
+			);
+		});
+	});
+});
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/constants.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/constants.ts
@@ -0,0 +1,36 @@
+export const ROW_HEIGHT = 24;
+export const SPAN_BAR_HEIGHT = 22;
+export const SPAN_BAR_Y_OFFSET = Math.floor((ROW_HEIGHT - SPAN_BAR_HEIGHT) / 2);
+export const EVENT_DOT_SIZE = 6;
+
+// Span bar sizing relative to row height (used by getFlamegraphRowMetrics)
+export const SPAN_BAR_HEIGHT_RATIO = SPAN_BAR_HEIGHT / ROW_HEIGHT;
+export const MIN_SPAN_BAR_HEIGHT = 8;
+export const MAX_SPAN_BAR_HEIGHT = SPAN_BAR_HEIGHT;
+
+// Event dot sizing relative to span bar height
+export const EVENT_DOT_SIZE_RATIO = EVENT_DOT_SIZE / SPAN_BAR_HEIGHT;
+export const MIN_EVENT_DOT_SIZE = 4;
+export const MAX_EVENT_DOT_SIZE = EVENT_DOT_SIZE;
+
+export const LABEL_FONT = '11px Inter, sans-serif';
+export const LABEL_PADDING_X = 8;
+export const MIN_WIDTH_FOR_NAME = 30;
+export const MIN_WIDTH_FOR_NAME_AND_DURATION = 80;
+
+// Dynamic row height (vertical zoom) -- disabled for now (MIN === MAX)
+export const MIN_ROW_HEIGHT = 24;
+export const MAX_ROW_HEIGHT = 24;
+export const DEFAULT_ROW_HEIGHT = MIN_ROW_HEIGHT;
+
+// Zoom intensity -- how fast zoom reacts to wheel/pinch delta
+export const PINCH_ZOOM_INTENSITY_H = 0.01;
+export const SCROLL_ZOOM_INTENSITY_H = 0.0015;
+export const PINCH_ZOOM_INTENSITY_V = 0.008;
+export const SCROLL_ZOOM_INTENSITY_V = 0.001;
+
+// Minimum visible time span in ms (prevents zooming to sub-pixel)
+export const MIN_VISIBLE_SPAN_MS = 5;
+
+// Selected span style (dashed border)
+export const DASHED_BORDER_LINE_DASH = [4, 2];
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useCanvasSetup.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useCanvasSetup.ts
@@ -0,0 +1,55 @@
+import { RefObject, useCallback, useEffect } from 'react';
+
+export function useCanvasSetup(
+	canvasRef: RefObject<HTMLCanvasElement>,
+	containerRef: RefObject<HTMLDivElement>,
+	onDraw: () => void,
+): void {
+	const updateCanvasSize = useCallback(() => {
+		const canvas = canvasRef.current;
+		const container = containerRef.current;
+		if (!canvas || !container) {
+			return;
+		}
+
+		const dpr = window.devicePixelRatio || 1;
+		const rect = container.getBoundingClientRect();
+		const viewportHeight = container.clientHeight;
+
+		canvas.style.width = `${rect.width}px`;
+		canvas.style.height = `${viewportHeight}px`;
+
+		const newWidth = Math.floor(rect.width * dpr);
+		const newHeight = Math.floor(viewportHeight * dpr);
+
+		if (canvas.width !== newWidth || canvas.height !== newHeight) {
+			canvas.width = newWidth;
+			canvas.height = newHeight;
+			onDraw();
+		}
+	}, [canvasRef, containerRef, onDraw]);
+
+	useEffect(() => {
+		const container = containerRef.current;
+		if (!container) {
+			return (): void => {};
+		}
+
+		const resizeObserver = new ResizeObserver(updateCanvasSize);
+		resizeObserver.observe(container);
+		updateCanvasSize();
+
+		// when dpr changes, update the canvas size
+		const dprQuery = window.matchMedia('(resolution: 1dppx)');
+		dprQuery.addEventListener('change', updateCanvasSize);
+
+		return (): void => {
+			resizeObserver.disconnect();
+			dprQuery.removeEventListener('change', updateCanvasSize);
+		};
+	}, [containerRef, updateCanvasSize]);
+
+	useEffect(() => {
+		onDraw();
+	}, [onDraw]);
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDrag.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDrag.ts
@@ -0,0 +1,178 @@
+import {
+	Dispatch,
+	MouseEvent as ReactMouseEvent,
+	MutableRefObject,
+	RefObject,
+	SetStateAction,
+	useCallback,
+	useRef,
+} from 'react';
+
+import { ITraceMetadata } from '../types';
+import { clamp } from '../utils';
+
+interface UseFlamegraphDragArgs {
+	canvasRef: RefObject<HTMLCanvasElement>;
+	containerRef: RefObject<HTMLDivElement>;
+	traceMetadata: ITraceMetadata;
+	viewStartRef: MutableRefObject<number>;
+	viewEndRef: MutableRefObject<number>;
+	setViewStartTs: Dispatch<SetStateAction<number>>;
+	setViewEndTs: Dispatch<SetStateAction<number>>;
+	scrollTopRef: MutableRefObject<number>;
+	setScrollTop: Dispatch<SetStateAction<number>>;
+	totalHeight: number;
+}
+
+interface UseFlamegraphDragResult {
+	handleMouseDown: (e: ReactMouseEvent) => void;
+	handleMouseMove: (e: ReactMouseEvent) => void;
+	handleMouseUp: () => void;
+	handleDragMouseLeave: () => void;
+	suppressClickRef: MutableRefObject<boolean>;
+	isDraggingRef: MutableRefObject<boolean>;
+}
+
+const DRAG_THRESHOLD = 5;
+
+export function useFlamegraphDrag(
+	args: UseFlamegraphDragArgs,
+): UseFlamegraphDragResult {
+	const {
+		canvasRef,
+		containerRef,
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		setViewStartTs,
+		setViewEndTs,
+		scrollTopRef,
+		setScrollTop,
+		totalHeight,
+	} = args;
+
+	const isDraggingRef = useRef(false);
+	const dragStartRef = useRef<{ x: number; y: number } | null>(null);
+	const dragDistanceRef = useRef(0);
+	const suppressClickRef = useRef(false);
+
+	const clampScrollTop = useCallback(
+		(next: number): number => {
+			const container = containerRef.current;
+			if (!container) {
+				return 0;
+			}
+			const viewportHeight = container.clientHeight;
+			const maxScroll = Math.max(0, totalHeight - viewportHeight);
+			return clamp(next, 0, maxScroll);
+		},
+		[containerRef, totalHeight],
+	);
+
+	const handleMouseDown = useCallback(
+		(event: ReactMouseEvent): void => {
+			if (event.button !== 0) {
+				return;
+			}
+			event.preventDefault();
+
+			isDraggingRef.current = true;
+			dragStartRef.current = { x: event.clientX, y: event.clientY };
+			dragDistanceRef.current = 0;
+
+			const canvas = canvasRef.current;
+			if (canvas) {
+				canvas.style.cursor = 'grabbing';
+			}
+		},
+		[canvasRef],
+	);
+
+	const handleMouseMove = useCallback(
+		(event: ReactMouseEvent): void => {
+			if (!isDraggingRef.current || !dragStartRef.current) {
+				return;
+			}
+
+			const canvas = canvasRef.current;
+			if (!canvas) {
+				return;
+			}
+
+			const rect = canvas.getBoundingClientRect();
+			const deltaX = event.clientX - dragStartRef.current.x;
+			const deltaY = event.clientY - dragStartRef.current.y;
+
+			dragDistanceRef.current = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
+
+			// --- Horizontal pan ---
+			const timeSpan = viewEndRef.current - viewStartRef.current;
+			const deltaTime = (deltaX / rect.width) * timeSpan;
+
+			const newStart = viewStartRef.current - deltaTime;
+			const clampedStart = clamp(
+				newStart,
+				traceMetadata.startTime,
+				traceMetadata.endTime - timeSpan,
+			);
+			const clampedEnd = clampedStart + timeSpan;
+
+			viewStartRef.current = clampedStart;
+			viewEndRef.current = clampedEnd;
+			setViewStartTs(clampedStart);
+			setViewEndTs(clampedEnd);
+
+			// --- Vertical scroll pan ---
+			const nextScrollTop = clampScrollTop(scrollTopRef.current - deltaY);
+			scrollTopRef.current = nextScrollTop;
+			setScrollTop(nextScrollTop);
+
+			dragStartRef.current = { x: event.clientX, y: event.clientY };
+		},
+		[
+			canvasRef,
+			traceMetadata,
+			viewStartRef,
+			viewEndRef,
+			setViewStartTs,
+			setViewEndTs,
+			scrollTopRef,
+			setScrollTop,
+			clampScrollTop,
+		],
+	);
+
+	const handleMouseUp = useCallback((): void => {
+		const wasDrag = dragDistanceRef.current > DRAG_THRESHOLD;
+		suppressClickRef.current = wasDrag;
+
+		isDraggingRef.current = false;
+		dragStartRef.current = null;
+		dragDistanceRef.current = 0;
+
+		const canvas = canvasRef.current;
+		if (canvas) {
+			canvas.style.cursor = 'grab';
+		}
+	}, [canvasRef]);
+
+	const handleDragMouseLeave = useCallback((): void => {
+		isDraggingRef.current = false;
+		dragStartRef.current = null;
+		dragDistanceRef.current = 0;
+
+		const canvas = canvasRef.current;
+		if (canvas) {
+			canvas.style.cursor = 'grab';
+		}
+	}, [canvasRef]);
+
+	return {
+		handleMouseDown,
+		handleMouseMove,
+		handleMouseUp,
+		handleDragMouseLeave,
+		suppressClickRef,
+		isDraggingRef,
+	};
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDraw.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphDraw.ts
@@ -0,0 +1,222 @@
+import React, { RefObject, useCallback, useRef } from 'react';
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+import { SpanRect } from '../types';
+import {
+	clamp,
+	drawSpanBar,
+	FlamegraphRowMetrics,
+	getFlamegraphRowMetrics,
+	getSpanColor,
+} from '../utils';
+
+interface UseFlamegraphDrawArgs {
+	canvasRef: RefObject<HTMLCanvasElement>;
+	containerRef: RefObject<HTMLDivElement>;
+	spans: FlamegraphSpan[][];
+	viewStartTs: number;
+	viewEndTs: number;
+	scrollTop: number;
+	rowHeight: number;
+	selectedSpanId: string | undefined;
+	hoveredSpanId: string;
+	isDarkMode: boolean;
+	spanRectsRef?: React.MutableRefObject<SpanRect[]>;
+}
+
+interface UseFlamegraphDrawResult {
+	drawFlamegraph: () => void;
+	spanRectsRef: RefObject<SpanRect[]>;
+}
+
+const OVERSCAN_ROWS = 4;
+
+interface DrawLevelArgs {
+	ctx: CanvasRenderingContext2D;
+	levelSpans: FlamegraphSpan[];
+	levelIndex: number;
+	y: number;
+	viewStartTs: number;
+	timeSpan: number;
+	cssWidth: number;
+	selectedSpanId: string | undefined;
+	hoveredSpanId: string;
+	isDarkMode: boolean;
+	spanRectsArray: SpanRect[];
+	metrics: FlamegraphRowMetrics;
+}
+
+function drawLevel(args: DrawLevelArgs): void {
+	const {
+		ctx,
+		levelSpans,
+		levelIndex,
+		y,
+		viewStartTs,
+		timeSpan,
+		cssWidth,
+		selectedSpanId,
+		hoveredSpanId,
+		isDarkMode,
+		spanRectsArray,
+		metrics,
+	} = args;
+
+	const viewEndTs = viewStartTs + timeSpan;
+
+	for (let i = 0; i < levelSpans.length; i++) {
+		const span = levelSpans[i];
+		const spanStartMs = span.timestamp;
+		const spanEndMs = span.timestamp + span.durationNano / 1e6;
+
+		// Time culling -- skip spans entirely outside the visible time window
+		if (spanEndMs < viewStartTs || spanStartMs > viewEndTs) {
+			continue;
+		}
+
+		const leftOffset = ((spanStartMs - viewStartTs) / timeSpan) * cssWidth;
+		const rightEdge = ((spanEndMs - viewStartTs) / timeSpan) * cssWidth;
+		let width = rightEdge - leftOffset;
+
+		// Clamp to visible x-range
+		if (leftOffset < 0) {
+			width += leftOffset;
+			if (width <= 0) {
+				continue;
+			}
+		}
+		if (rightEdge > cssWidth) {
+			width = cssWidth - Math.max(0, leftOffset);
+			if (width <= 0) {
+				continue;
+			}
+		}
+
+		// Minimum 1px width so tiny spans remain visible
+		width = clamp(width, 1, Infinity);
+
+		const color = getSpanColor({ span, isDarkMode });
+
+		drawSpanBar({
+			ctx,
+			span,
+			x: Math.max(0, leftOffset),
+			y,
+			width,
+			levelIndex,
+			spanRectsArray,
+			color,
+			isDarkMode,
+			metrics,
+			selectedSpanId,
+			hoveredSpanId,
+		});
+	}
+}
+
+export function useFlamegraphDraw(
+	args: UseFlamegraphDrawArgs,
+): UseFlamegraphDrawResult {
+	const {
+		canvasRef,
+		containerRef,
+		spans,
+		viewStartTs,
+		viewEndTs,
+		scrollTop,
+		rowHeight,
+		selectedSpanId,
+		hoveredSpanId,
+		isDarkMode,
+		spanRectsRef: spanRectsRefProp,
+	} = args;
+
+	const spanRectsRefInternal = useRef<SpanRect[]>([]);
+	const spanRectsRef = spanRectsRefProp ?? spanRectsRefInternal;
+
+	const drawFlamegraph = useCallback(() => {
+		const canvas = canvasRef.current;
+		const container = containerRef.current;
+		if (!canvas || !container) {
+			return;
+		}
+
+		const ctx = canvas.getContext('2d');
+		if (!ctx) {
+			return;
+		}
+
+		const dpr = window.devicePixelRatio || 1;
+		ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
+
+		const timeSpan = viewEndTs - viewStartTs;
+		if (timeSpan <= 0) {
+			return;
+		}
+
+		const cssWidth = canvas.width / dpr;
+		const metrics = getFlamegraphRowMetrics(rowHeight);
+
+		// ---- Vertical clipping window ----
+		const viewportHeight = container.clientHeight;
+
+		//starts drawing OVERSCAN_ROWS(4) rows above the visible area.
+		const firstLevel = Math.max(
+			0,
+			Math.floor(scrollTop / metrics.ROW_HEIGHT) - OVERSCAN_ROWS,
+		);
+		// adds 2*OVERSCAN_ROWS extra rows above and below the visible area.
+		const visibleLevelCount =
+			Math.ceil(viewportHeight / metrics.ROW_HEIGHT) + 2 * OVERSCAN_ROWS;
+
+		const lastLevel = Math.min(spans.length - 1, firstLevel + visibleLevelCount);
+
+		ctx.clearRect(0, 0, cssWidth, viewportHeight);
+
+		const spanRectsArray: SpanRect[] = [];
+
+		// ---- Draw only visible levels ----
+		for (let levelIndex = firstLevel; levelIndex <= lastLevel; levelIndex++) {
+			const levelSpans = spans[levelIndex];
+			if (!levelSpans) {
+				continue;
+			}
+
+			drawLevel({
+				ctx,
+				levelSpans,
+				levelIndex,
+				y: levelIndex * metrics.ROW_HEIGHT - scrollTop,
+				viewStartTs,
+				timeSpan,
+				cssWidth,
+				selectedSpanId,
+				hoveredSpanId,
+				isDarkMode,
+				spanRectsArray,
+				metrics,
+			});
+		}
+
+		spanRectsRef.current = spanRectsArray;
+	}, [
+		canvasRef,
+		containerRef,
+		spanRectsRef,
+		spans,
+		viewStartTs,
+		viewEndTs,
+		scrollTop,
+		rowHeight,
+		selectedSpanId,
+		hoveredSpanId,
+		isDarkMode,
+	]);
+
+	// TODO: spanRectsRef is a flat array — hover scans all visible rects O(N).
+	// Upgrade to per-level buckets: spanRects[levelIndex] = [...] so hover can
+	// compute level from mouseY / ROW_HEIGHT and scan only that row.
+	// Further: binary search within a level by x (spans are sorted by start time)
+	// to reduce hover cost from O(N) to O(log N).
+	return { drawFlamegraph, spanRectsRef };
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphHover.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphHover.ts
@@ -0,0 +1,214 @@
+import {
+	Dispatch,
+	MouseEvent as ReactMouseEvent,
+	MutableRefObject,
+	RefObject,
+	SetStateAction,
+	useCallback,
+	useState,
+} from 'react';
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+import { SpanRect } from '../types';
+import { ITraceMetadata } from '../types';
+import { getSpanColor } from '../utils';
+
+function getCanvasPointer(
+	canvas: HTMLCanvasElement,
+	clientX: number,
+	clientY: number,
+): { cssX: number; cssY: number } | null {
+	const rect = canvas.getBoundingClientRect();
+	const dpr = window.devicePixelRatio || 1;
+	const cssWidth = canvas.width / dpr;
+	const cssHeight = canvas.height / dpr;
+	const cssX = (clientX - rect.left) * (cssWidth / rect.width);
+	const cssY = (clientY - rect.top) * (cssHeight / rect.height);
+	return { cssX, cssY };
+}
+
+function findSpanAtPosition(
+	cssX: number,
+	cssY: number,
+	spanRects: SpanRect[],
+): FlamegraphSpan | null {
+	for (let i = spanRects.length - 1; i >= 0; i--) {
+		const r = spanRects[i];
+		if (
+			cssX >= r.x &&
+			cssX <= r.x + r.width &&
+			cssY >= r.y &&
+			cssY <= r.y + r.height
+		) {
+			return r.span;
+		}
+	}
+	return null;
+}
+
+export interface TooltipContent {
+	spanName: string;
+	status: 'ok' | 'warning' | 'error';
+	startMs: number;
+	durationMs: number;
+	clientX: number;
+	clientY: number;
+	spanColor: string;
+}
+
+interface UseFlamegraphHoverArgs {
+	canvasRef: RefObject<HTMLCanvasElement>;
+	spanRectsRef: MutableRefObject<SpanRect[]>;
+	traceMetadata: ITraceMetadata;
+	viewStartTs: number;
+	viewEndTs: number;
+	isDraggingRef: MutableRefObject<boolean>;
+	suppressClickRef: MutableRefObject<boolean>;
+	onSpanClick: (spanId: string) => void;
+	isDarkMode: boolean;
+}
+
+interface UseFlamegraphHoverResult {
+	hoveredSpanId: string | null;
+	setHoveredSpanId: Dispatch<SetStateAction<string | null>>;
+	handleHoverMouseMove: (e: ReactMouseEvent) => void;
+	handleHoverMouseLeave: () => void;
+	handleClick: (e: ReactMouseEvent) => void;
+	tooltipContent: TooltipContent | null;
+}
+
+export function useFlamegraphHover(
+	args: UseFlamegraphHoverArgs,
+): UseFlamegraphHoverResult {
+	const {
+		canvasRef,
+		spanRectsRef,
+		traceMetadata,
+		viewStartTs,
+		viewEndTs,
+		isDraggingRef,
+		suppressClickRef,
+		onSpanClick,
+		isDarkMode,
+	} = args;
+
+	const [hoveredSpanId, setHoveredSpanId] = useState<string | null>(null);
+	const [tooltipContent, setTooltipContent] = useState<TooltipContent | null>(
+		null,
+	);
+
+	const isZoomed =
+		viewStartTs !== traceMetadata.startTime ||
+		viewEndTs !== traceMetadata.endTime;
+
+	const updateCursor = useCallback(
+		(canvas: HTMLCanvasElement, span: FlamegraphSpan | null): void => {
+			if (span) {
+				canvas.style.cursor = 'pointer';
+			} else if (isZoomed) {
+				canvas.style.cursor = 'grab';
+			} else {
+				canvas.style.cursor = 'default';
+			}
+		},
+		[isZoomed],
+	);
+
+	const handleHoverMouseMove = useCallback(
+		(e: ReactMouseEvent): void => {
+			if (isDraggingRef.current) {
+				return;
+			}
+
+			const canvas = canvasRef.current;
+			if (!canvas) {
+				return;
+			}
+
+			const pointer = getCanvasPointer(canvas, e.clientX, e.clientY);
+			if (!pointer) {
+				return;
+			}
+
+			const span = findSpanAtPosition(
+				pointer.cssX,
+				pointer.cssY,
+				spanRectsRef.current,
+			);
+
+			if (span) {
+				setHoveredSpanId(span.spanId);
+				setTooltipContent({
+					spanName: span.name || 'unknown',
+					status: span.hasError ? 'error' : 'ok',
+					startMs: span.timestamp - traceMetadata.startTime,
+					durationMs: span.durationNano / 1e6,
+					clientX: e.clientX,
+					clientY: e.clientY,
+					spanColor: getSpanColor({ span, isDarkMode }),
+				});
+				updateCursor(canvas, span);
+			} else {
+				setHoveredSpanId(null);
+				setTooltipContent(null);
+				updateCursor(canvas, null);
+			}
+		},
+		[
+			canvasRef,
+			spanRectsRef,
+			traceMetadata.startTime,
+			isDraggingRef,
+			updateCursor,
+			isDarkMode,
+		],
+	);
+
+	const handleHoverMouseLeave = useCallback((): void => {
+		setHoveredSpanId(null);
+		setTooltipContent(null);
+
+		const canvas = canvasRef.current;
+		if (canvas) {
+			updateCursor(canvas, null);
+		}
+	}, [canvasRef, updateCursor]);
+
+	const handleClick = useCallback(
+		(e: ReactMouseEvent): void => {
+			if (suppressClickRef.current) {
+				return;
+			}
+
+			const canvas = canvasRef.current;
+			if (!canvas) {
+				return;
+			}
+
+			const pointer = getCanvasPointer(canvas, e.clientX, e.clientY);
+			if (!pointer) {
+				return;
+			}
+
+			const span = findSpanAtPosition(
+				pointer.cssX,
+				pointer.cssY,
+				spanRectsRef.current,
+			);
+
+			if (span) {
+				onSpanClick(span.spanId);
+			}
+		},
+		[canvasRef, spanRectsRef, suppressClickRef, onSpanClick],
+	);
+
+	return {
+		hoveredSpanId,
+		setHoveredSpanId,
+		handleHoverMouseMove,
+		handleHoverMouseLeave,
+		handleClick,
+		tooltipContent,
+	};
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphZoom.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useFlamegraphZoom.ts
@@ -0,0 +1,224 @@
+import {
+	Dispatch,
+	MutableRefObject,
+	RefObject,
+	SetStateAction,
+	useCallback,
+	useEffect,
+	useRef,
+} from 'react';
+
+import {
+	DEFAULT_ROW_HEIGHT,
+	MAX_ROW_HEIGHT,
+	MIN_ROW_HEIGHT,
+	MIN_VISIBLE_SPAN_MS,
+	PINCH_ZOOM_INTENSITY_H,
+	PINCH_ZOOM_INTENSITY_V,
+	SCROLL_ZOOM_INTENSITY_H,
+	SCROLL_ZOOM_INTENSITY_V,
+} from '../constants';
+import { ITraceMetadata } from '../types';
+import { clamp } from '../utils';
+
+interface UseFlamegraphZoomArgs {
+	canvasRef: RefObject<HTMLCanvasElement>;
+	traceMetadata: ITraceMetadata;
+	viewStartRef: MutableRefObject<number>;
+	viewEndRef: MutableRefObject<number>;
+	rowHeightRef: MutableRefObject<number>;
+	setViewStartTs: Dispatch<SetStateAction<number>>;
+	setViewEndTs: Dispatch<SetStateAction<number>>;
+	setRowHeight: Dispatch<SetStateAction<number>>;
+}
+
+interface UseFlamegraphZoomResult {
+	handleResetZoom: () => void;
+	isOverFlamegraphRef: MutableRefObject<boolean>;
+}
+
+function getCanvasPointer(
+	canvasRef: RefObject<HTMLCanvasElement>,
+	clientX: number,
+): { cssX: number; cssWidth: number } | null {
+	const canvas = canvasRef.current;
+	if (!canvas) {
+		return null;
+	}
+
+	const rect = canvas.getBoundingClientRect();
+	const dpr = window.devicePixelRatio || 1;
+	const cssWidth = canvas.width / dpr;
+	const cssX = (clientX - rect.left) * (cssWidth / rect.width);
+
+	return { cssX, cssWidth };
+}
+
+export function useFlamegraphZoom(
+	args: UseFlamegraphZoomArgs,
+): UseFlamegraphZoomResult {
+	const {
+		canvasRef,
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		rowHeightRef,
+		setViewStartTs,
+		setViewEndTs,
+		setRowHeight,
+	} = args;
+
+	const isOverFlamegraphRef = useRef(false);
+	const wheelDeltaRef = useRef(0);
+	const rafRef = useRef<number | null>(null);
+	const lastCursorXRef = useRef(0);
+	const lastCssWidthRef = useRef(1);
+	const lastIsPinchRef = useRef(false);
+	const lastWheelClientXRef = useRef<number | null>(null);
+
+	// Prevent browser zoom when pinching over the flamegraph
+	useEffect(() => {
+		const onWheel = (e: WheelEvent): void => {
+			if (isOverFlamegraphRef.current && e.ctrlKey) {
+				e.preventDefault();
+			}
+		};
+
+		window.addEventListener('wheel', onWheel, { passive: false, capture: true });
+
+		return (): void => {
+			window.removeEventListener('wheel', onWheel, {
+				capture: true,
+			} as EventListenerOptions);
+		};
+	}, []);
+
+	const applyWheelZoom = useCallback(() => {
+		rafRef.current = null;
+
+		const cssWidth = lastCssWidthRef.current || 1;
+		const cursorX = lastCursorXRef.current;
+		const fullSpanMs = traceMetadata.endTime - traceMetadata.startTime;
+
+		const oldStart = viewStartRef.current;
+		const oldEnd = viewEndRef.current;
+		const oldSpan = oldEnd - oldStart;
+
+		const deltaY = wheelDeltaRef.current;
+		wheelDeltaRef.current = 0;
+		if (deltaY === 0) {
+			return;
+		}
+
+		const zoomH = lastIsPinchRef.current
+			? PINCH_ZOOM_INTENSITY_H
+			: SCROLL_ZOOM_INTENSITY_H;
+		const zoomV = lastIsPinchRef.current
+			? PINCH_ZOOM_INTENSITY_V
+			: SCROLL_ZOOM_INTENSITY_V;
+
+		const factorH = Math.exp(deltaY * zoomH);
+		const factorV = Math.exp(deltaY * zoomV);
+
+		// --- Horizontal zoom ---
+		const desiredSpan = oldSpan * factorH;
+		const minSpanMs = Math.max(
+			MIN_VISIBLE_SPAN_MS,
+			oldSpan / Math.max(cssWidth, 1),
+		);
+		const clampedSpan = clamp(desiredSpan, minSpanMs, fullSpanMs);
+
+		const cursorRatio = clamp(cursorX / cssWidth, 0, 1);
+		const anchorTs = oldStart + cursorRatio * oldSpan;
+
+		let nextStart = anchorTs - cursorRatio * clampedSpan;
+		nextStart = clamp(
+			nextStart,
+			traceMetadata.startTime,
+			traceMetadata.endTime - clampedSpan,
+		);
+		const nextEnd = nextStart + clampedSpan;
+
+		// --- Vertical zoom (row height) ---
+		const desiredRow = rowHeightRef.current * (1 / factorV);
+		const nextRow = clamp(desiredRow, MIN_ROW_HEIGHT, MAX_ROW_HEIGHT);
+
+		// Write refs immediately so rapid wheel events read fresh values
+		viewStartRef.current = nextStart;
+		viewEndRef.current = nextEnd;
+		rowHeightRef.current = nextRow;
+
+		setViewStartTs(nextStart);
+		setViewEndTs(nextEnd);
+		setRowHeight(nextRow);
+	}, [
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		rowHeightRef,
+		setViewStartTs,
+		setViewEndTs,
+		setRowHeight,
+	]);
+
+	// Native wheel listener on the canvas (passive: false for reliable preventDefault)
+	useEffect(() => {
+		const canvas = canvasRef.current;
+		if (!canvas) {
+			return (): void => {};
+		}
+
+		const onWheel = (e: WheelEvent): void => {
+			e.preventDefault();
+
+			const pointer = getCanvasPointer(canvasRef, e.clientX);
+			if (!pointer) {
+				return;
+			}
+
+			// Flush accumulated delta if cursor moved significantly
+			if (lastWheelClientXRef.current !== null) {
+				const moved = Math.abs(e.clientX - lastWheelClientXRef.current);
+				if (moved > 6) {
+					wheelDeltaRef.current = 0;
+				}
+			}
+			lastWheelClientXRef.current = e.clientX;
+
+			lastIsPinchRef.current = e.ctrlKey;
+			lastCssWidthRef.current = pointer.cssWidth;
+			lastCursorXRef.current = pointer.cssX;
+			wheelDeltaRef.current += e.deltaY;
+
+			if (rafRef.current == null) {
+				rafRef.current = requestAnimationFrame(applyWheelZoom);
+			}
+		};
+
+		canvas.addEventListener('wheel', onWheel, { passive: false });
+
+		return (): void => {
+			canvas.removeEventListener('wheel', onWheel);
+		};
+	}, [canvasRef, applyWheelZoom]);
+
+	const handleResetZoom = useCallback(() => {
+		viewStartRef.current = traceMetadata.startTime;
+		viewEndRef.current = traceMetadata.endTime;
+		rowHeightRef.current = DEFAULT_ROW_HEIGHT;
+
+		setViewStartTs(traceMetadata.startTime);
+		setViewEndTs(traceMetadata.endTime);
+		setRowHeight(DEFAULT_ROW_HEIGHT);
+	}, [
+		traceMetadata,
+		viewStartRef,
+		viewEndRef,
+		rowHeightRef,
+		setViewStartTs,
+		setViewEndTs,
+		setRowHeight,
+	]);
+
+	return { handleResetZoom, isOverFlamegraphRef };
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useScrollToSpan.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/hooks/useScrollToSpan.ts
@@ -0,0 +1,118 @@
+import {
+	Dispatch,
+	MutableRefObject,
+	RefObject,
+	SetStateAction,
+	useEffect,
+} from 'react';
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+import { MIN_VISIBLE_SPAN_MS } from '../constants';
+import { ITraceMetadata } from '../types';
+import { clamp, findSpanById, getFlamegraphRowMetrics } from '../utils';
+
+interface UseScrollToSpanArgs {
+	firstSpanAtFetchLevel: string;
+	spans: FlamegraphSpan[][];
+	traceMetadata: ITraceMetadata;
+	containerRef: RefObject<HTMLDivElement>;
+	viewStartRef: MutableRefObject<number>;
+	viewEndRef: MutableRefObject<number>;
+	scrollTopRef: MutableRefObject<number>;
+	rowHeight: number;
+	setViewStartTs: Dispatch<SetStateAction<number>>;
+	setViewEndTs: Dispatch<SetStateAction<number>>;
+	setScrollTop: Dispatch<SetStateAction<number>>;
+}
+
+/**
+ * When firstSpanAtFetchLevel (from URL spanId) changes, scroll and zoom the
+ * flamegraph so the selected span is centered in view.
+ */
+export function useScrollToSpan(args: UseScrollToSpanArgs): void {
+	const {
+		firstSpanAtFetchLevel,
+		spans,
+		traceMetadata,
+		containerRef,
+		viewStartRef,
+		viewEndRef,
+		scrollTopRef,
+		rowHeight,
+		setViewStartTs,
+		setViewEndTs,
+		setScrollTop,
+	} = args;
+
+	useEffect(() => {
+		if (!firstSpanAtFetchLevel || spans.length === 0) {
+			return;
+		}
+
+		const result = findSpanById(spans, firstSpanAtFetchLevel);
+		if (!result) {
+			return;
+		}
+
+		const { span, levelIndex } = result;
+		const container = containerRef.current;
+		if (!container) {
+			return;
+		}
+
+		const metrics = getFlamegraphRowMetrics(rowHeight);
+		const viewportHeight = container.clientHeight;
+		const totalHeight = spans.length * metrics.ROW_HEIGHT;
+		const maxScroll = Math.max(0, totalHeight - viewportHeight);
+
+		// Vertical: center the span's row in the viewport
+		const targetScrollTop = clamp(
+			levelIndex * metrics.ROW_HEIGHT -
+				viewportHeight / 2 +
+				metrics.ROW_HEIGHT / 2,
+			0,
+			maxScroll,
+		);
+
+		// Horizontal: zoom to span with padding (2x span duration), center it
+		const spanStartMs = span.timestamp;
+		const spanEndMs = span.timestamp + span.durationNano / 1e6;
+		const spanDurationMs = spanEndMs - spanStartMs;
+		const spanCenterMs = (spanStartMs + spanEndMs) / 2;
+
+		const visibleWindowMs = Math.max(spanDurationMs * 2, MIN_VISIBLE_SPAN_MS);
+		const fullSpanMs = traceMetadata.endTime - traceMetadata.startTime;
+		const clampedWindow = clamp(visibleWindowMs, MIN_VISIBLE_SPAN_MS, fullSpanMs);
+
+		let targetViewStart = spanCenterMs - clampedWindow / 2;
+		let targetViewEnd = spanCenterMs + clampedWindow / 2;
+
+		targetViewStart = clamp(
+			targetViewStart,
+			traceMetadata.startTime,
+			traceMetadata.endTime - clampedWindow,
+		);
+		targetViewEnd = targetViewStart + clampedWindow;
+
+		// Apply immediately (instant jump)
+		viewStartRef.current = targetViewStart;
+		viewEndRef.current = targetViewEnd;
+		scrollTopRef.current = targetScrollTop;
+
+		setViewStartTs(targetViewStart);
+		setViewEndTs(targetViewEnd);
+		setScrollTop(targetScrollTop);
+	}, [
+		firstSpanAtFetchLevel,
+		spans,
+		traceMetadata,
+		containerRef,
+		viewStartRef,
+		viewEndRef,
+		scrollTopRef,
+		rowHeight,
+		setViewStartTs,
+		setViewEndTs,
+		setScrollTop,
+	]);
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/types.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/types.ts
@@ -0,0 +1,24 @@
+import { Dispatch, SetStateAction } from 'react';
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+export interface ITraceMetadata {
+	startTime: number;
+	endTime: number;
+}
+
+export interface FlamegraphCanvasProps {
+	spans: FlamegraphSpan[][];
+	firstSpanAtFetchLevel: string;
+	setFirstSpanAtFetchLevel: Dispatch<SetStateAction<string>>;
+	onSpanClick: (spanId: string) => void;
+	traceMetadata: ITraceMetadata;
+}
+
+export interface SpanRect {
+	span: FlamegraphSpan;
+	x: number;
+	y: number;
+	width: number;
+	height: number;
+	level: number;
+}
--- a/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/utils.ts
+++ b/frontend/src/pages/TraceDetailsV3/TraceFlamegraph/utils.ts
@@ -0,0 +1,355 @@
+import { themeColors } from 'constants/theme';
+import { convertTimeToRelevantUnit } from 'container/TraceDetail/utils';
+import { generateColor } from 'lib/uPlotLib/utils/generateColor';
+import { FlamegraphSpan } from 'types/api/trace/getTraceFlamegraph';
+
+import {
+	DASHED_BORDER_LINE_DASH,
+	EVENT_DOT_SIZE_RATIO,
+	LABEL_FONT,
+	LABEL_PADDING_X,
+	MAX_EVENT_DOT_SIZE,
+	MAX_SPAN_BAR_HEIGHT,
+	MIN_EVENT_DOT_SIZE,
+	MIN_SPAN_BAR_HEIGHT,
+	MIN_WIDTH_FOR_NAME,
+	MIN_WIDTH_FOR_NAME_AND_DURATION,
+	SPAN_BAR_HEIGHT_RATIO,
+} from './constants';
+import { SpanRect } from './types';
+
+export function clamp(v: number, min: number, max: number): number {
+	return Math.max(min, Math.min(max, v));
+}
+
+/** Create diagonal stripe pattern for selected/hovered span (repeating-linear-gradient -45deg style). */
+function createStripePattern(
+	ctx: CanvasRenderingContext2D,
+	color: string,
+): CanvasPattern | null {
+	const size = 20;
+	const patternCanvas = document.createElement('canvas');
+	patternCanvas.width = size;
+	patternCanvas.height = size;
+	const pCtx = patternCanvas.getContext('2d');
+	if (!pCtx) {
+		return null;
+	}
+
+	// Diagonal stripes at -45deg: 10px transparent, 10px colored (0.04 opacity), repeat
+	pCtx.globalAlpha = 0.04;
+	pCtx.strokeStyle = color;
+	pCtx.lineWidth = 10;
+	pCtx.lineCap = 'butt';
+	for (let i = -size; i < size * 2; i += size) {
+		pCtx.beginPath();
+		pCtx.moveTo(i + size, 0);
+		pCtx.lineTo(i, size);
+		pCtx.stroke();
+	}
+	pCtx.globalAlpha = 1;
+
+	return ctx.createPattern(patternCanvas, 'repeat');
+}
+
+export function findSpanById(
+	spans: FlamegraphSpan[][],
+	spanId: string,
+): { span: FlamegraphSpan; levelIndex: number } | null {
+	for (let levelIndex = 0; levelIndex < spans.length; levelIndex++) {
+		const span = spans[levelIndex]?.find((s) => s.spanId === spanId);
+		if (span) {
+			return { span, levelIndex };
+		}
+	}
+	return null;
+}
+
+export interface FlamegraphRowMetrics {
+	ROW_HEIGHT: number;
+	SPAN_BAR_HEIGHT: number;
+	SPAN_BAR_Y_OFFSET: number;
+	EVENT_DOT_SIZE: number;
+}
+
+export function getFlamegraphRowMetrics(
+	rowHeight: number,
+): FlamegraphRowMetrics {
+	const spanBarHeight = clamp(
+		Math.round(rowHeight * SPAN_BAR_HEIGHT_RATIO),
+		MIN_SPAN_BAR_HEIGHT,
+		MAX_SPAN_BAR_HEIGHT,
+	);
+	const spanBarYOffset = Math.floor((rowHeight - spanBarHeight) / 2);
+	const eventDotSize = clamp(
+		Math.round(spanBarHeight * EVENT_DOT_SIZE_RATIO),
+		MIN_EVENT_DOT_SIZE,
+		MAX_EVENT_DOT_SIZE,
+	);
+
+	return {
+		ROW_HEIGHT: rowHeight,
+		SPAN_BAR_HEIGHT: spanBarHeight,
+		SPAN_BAR_Y_OFFSET: spanBarYOffset,
+		EVENT_DOT_SIZE: eventDotSize,
+	};
+}
+
+interface GetSpanColorArgs {
+	span: FlamegraphSpan;
+	isDarkMode: boolean;
+}
+
+export function getSpanColor(args: GetSpanColorArgs): string {
+	const { span, isDarkMode } = args;
+	let color = generateColor(span.serviceName, themeColors.traceDetailColorsV3);
+
+	if (span.hasError) {
+		color = isDarkMode ? 'rgb(239, 68, 68)' : 'rgb(220, 38, 38)';
+	}
+
+	return color;
+}
+
+interface DrawEventDotArgs {
+	ctx: CanvasRenderingContext2D;
+	x: number;
+	y: number;
+	isError: boolean;
+	isDarkMode: boolean;
+	eventDotSize: number;
+}
+
+export function drawEventDot(args: DrawEventDotArgs): void {
+	const { ctx, x, y, isError, isDarkMode, eventDotSize } = args;
+
+	ctx.save();
+	ctx.translate(x, y);
+	ctx.rotate(Math.PI / 4);
+
+	if (isError) {
+		ctx.fillStyle = isDarkMode ? 'rgb(239, 68, 68)' : 'rgb(220, 38, 38)';
+		ctx.strokeStyle = isDarkMode ? 'rgb(185, 28, 28)' : 'rgb(153, 27, 27)';
+	} else {
+		ctx.fillStyle = isDarkMode ? 'rgb(14, 165, 233)' : 'rgb(6, 182, 212)';
+		ctx.strokeStyle = isDarkMode ? 'rgb(2, 132, 199)' : 'rgb(8, 145, 178)';
+	}
+
+	ctx.lineWidth = 1;
+	const half = eventDotSize / 2;
+	ctx.fillRect(-half, -half, eventDotSize, eventDotSize);
+	ctx.strokeRect(-half, -half, eventDotSize, eventDotSize);
+	ctx.restore();
+}
+
+interface DrawSpanBarArgs {
+	ctx: CanvasRenderingContext2D;
+	span: FlamegraphSpan;
+	x: number;
+	y: number;
+	width: number;
+	levelIndex: number;
+	spanRectsArray: SpanRect[];
+	color: string;
+	isDarkMode: boolean;
+	metrics: FlamegraphRowMetrics;
+	selectedSpanId?: string | null;
+	hoveredSpanId?: string | null;
+}
+
+export function drawSpanBar(args: DrawSpanBarArgs): void {
+	const {
+		ctx,
+		span,
+		x,
+		y,
+		width,
+		levelIndex,
+		spanRectsArray,
+		color,
+		isDarkMode,
+		metrics,
+		selectedSpanId,
+		hoveredSpanId,
+	} = args;
+
+	const spanY = y + metrics.SPAN_BAR_Y_OFFSET;
+	const isSelected = selectedSpanId === span.spanId;
+	const isHovered = hoveredSpanId === span.spanId;
+	const isSelectedOrHovered = isSelected || isHovered;
+
+	ctx.beginPath();
+	ctx.roundRect(x, spanY, width, metrics.SPAN_BAR_HEIGHT, 2);
+
+	if (isSelectedOrHovered) {
+		// Diagonal stripe pattern (repeating-linear-gradient -45deg style) + border in span color
+		const pattern = createStripePattern(ctx, color);
+		if (pattern) {
+			ctx.fillStyle = pattern;
+			ctx.fill();
+		}
+		if (isSelected) {
+			ctx.setLineDash(DASHED_BORDER_LINE_DASH);
+		}
+		ctx.strokeStyle = color;
+		ctx.lineWidth = isSelected ? 2 : 1;
+		ctx.stroke();
+		if (isSelected) {
+			ctx.setLineDash([]);
+		}
+	} else {
+		ctx.fillStyle = color;
+		ctx.fill();
+	}
+
+	spanRectsArray.push({
+		span,
+		x,
+		y: spanY,
+		width,
+		height: metrics.SPAN_BAR_HEIGHT,
+		level: levelIndex,
+	});
+
+	span.event?.forEach((event) => {
+		const spanDurationMs = span.durationNano / 1e6;
+		if (spanDurationMs <= 0) {
+			return;
+		}
+
+		const eventTimeMs = event.timeUnixNano / 1e6;
+		const eventOffsetPercent =
+			((eventTimeMs - span.timestamp) / spanDurationMs) * 100;
+		const clampedOffset = clamp(eventOffsetPercent, 1, 99);
+		const eventX = x + (clampedOffset / 100) * width;
+		const eventY = spanY + metrics.SPAN_BAR_HEIGHT / 2;
+
+		drawEventDot({
+			ctx,
+			x: eventX,
+			y: eventY,
+			isError: event.isError,
+			isDarkMode,
+			eventDotSize: metrics.EVENT_DOT_SIZE,
+		});
+	});
+
+	drawSpanLabel({
+		ctx,
+		span,
+		x,
+		y: spanY,
+		width,
+		color,
+		isSelectedOrHovered,
+		isDarkMode,
+		spanBarHeight: metrics.SPAN_BAR_HEIGHT,
+	});
+}
+
+export function formatDuration(durationNano: number): string {
+	const durationMs = durationNano / 1e6;
+	const { time, timeUnitName } = convertTimeToRelevantUnit(durationMs);
+	return `${parseFloat(time.toFixed(2))}${timeUnitName}`;
+}
+
+interface DrawSpanLabelArgs {
+	ctx: CanvasRenderingContext2D;
+	span: FlamegraphSpan;
+	x: number;
+	y: number;
+	width: number;
+	color: string;
+	isSelectedOrHovered: boolean;
+	isDarkMode: boolean;
+	spanBarHeight: number;
+}
+
+function drawSpanLabel(args: DrawSpanLabelArgs): void {
+	const {
+		ctx,
+		span,
+		x,
+		y,
+		width,
+		color,
+		isSelectedOrHovered,
+		isDarkMode,
+		spanBarHeight,
+	} = args;
+
+	if (width < MIN_WIDTH_FOR_NAME) {
+		return;
+	}
+
+	const name = span.name;
+
+	ctx.save();
+
+	// Clip text to span bar bounds
+	ctx.beginPath();
+	ctx.rect(x, y, width, spanBarHeight);
+	ctx.clip();
+
+	ctx.font = LABEL_FONT;
+	ctx.fillStyle = isSelectedOrHovered
+		? color
+		: isDarkMode
+		? 'rgba(0, 0, 0, 0.9)'
+		: 'rgba(255, 255, 255, 0.9)';
+	ctx.textBaseline = 'middle';
+
+	const textY = y + spanBarHeight / 2;
+	const leftX = x + LABEL_PADDING_X;
+	const rightX = x + width - LABEL_PADDING_X;
+	const availableWidth = width - LABEL_PADDING_X * 2;
+
+	if (width >= MIN_WIDTH_FOR_NAME_AND_DURATION) {
+		const duration = formatDuration(span.durationNano);
+		const durationWidth = ctx.measureText(duration).width;
+		const minGap = 6;
+		const nameSpace = availableWidth - durationWidth - minGap;
+
+		// Duration right-aligned
+		ctx.textAlign = 'right';
+		ctx.fillText(duration, rightX, textY);
+
+		// Name left-aligned, truncated to fit remaining space
+		if (nameSpace > 20) {
+			ctx.textAlign = 'left';
+			ctx.fillText(truncateText(ctx, name, nameSpace), leftX, textY);
+		}
+	} else {
+		// Name only, truncated to fit
+		ctx.textAlign = 'left';
+		ctx.fillText(truncateText(ctx, name, availableWidth), leftX, textY);
+	}
+
+	ctx.restore();
+}
+
+function truncateText(
+	ctx: CanvasRenderingContext2D,
+	text: string,
+	maxWidth: number,
+): string {
+	const ellipsis = '...';
+	const ellipsisWidth = ctx.measureText(ellipsis).width;
+
+	if (ctx.measureText(text).width <= maxWidth) {
+		return text;
+	}
+
+	let lo = 0;
+	let hi = text.length;
+	while (lo < hi) {
+		const mid = Math.ceil((lo + hi) / 2);
+		if (ctx.measureText(text.slice(0, mid)).width + ellipsisWidth <= maxWidth) {
+			lo = mid;
+		} else {
+			hi = mid - 1;
+		}
+	}
+
+	return lo > 0 ? `${text.slice(0, lo)}${ellipsis}` : ellipsis;
+}
--- a/frontend/src/pages/TraceDetailsV3/index.tsx
+++ b/frontend/src/pages/TraceDetailsV3/index.tsx
@@ -0,0 +1,37 @@
+import {
+	ResizableHandle,
+	ResizablePanel,
+	ResizablePanelGroup,
+} from '@signozhq/resizable';
+
+import TraceDetailsHeader from './TraceDetailsHeader/TraceDetailsHeader';
+import TraceFlamegraph from './TraceFlamegraph/TraceFlamegraph';
+
+function TraceDetailsV3(): JSX.Element {
+	return (
+		<div
+			style={{
+				height: 'calc(100vh - 90px)',
+				display: 'flex',
+				flexDirection: 'column',
+			}}
+		>
+			<TraceDetailsHeader />
+			<ResizablePanelGroup
+				direction="vertical"
+				autoSaveId="trace-details-v3-layout"
+				style={{ flex: 1 }}
+			>
+				<ResizablePanel defaultSize={40} minSize={20} maxSize={80}>
+					<TraceFlamegraph />
+				</ResizablePanel>
+				<ResizableHandle withHandle />
+				<ResizablePanel defaultSize={60} minSize={20}>
+					<div />
+				</ResizablePanel>
+			</ResizablePanelGroup>
+		</div>
+	);
+}
+
+export default TraceDetailsV3;
--- a/frontend/src/pages/TracesExplorer/TimeSeriesView/index.tsx
+++ b/frontend/src/pages/TracesExplorer/TimeSeriesView/index.tsx
@@ -4,7 +4,6 @@ import {
 	SetStateAction,
 	useEffect,
 	useMemo,
-	useState,
 } from 'react';
 // eslint-disable-next-line no-restricted-imports
 import { useSelector } from 'react-redux';
@@ -16,6 +15,7 @@ import TimeSeriesView from 'container/TimeSeriesView/TimeSeriesView';
 import { convertDataValueToMs } from 'container/TimeSeriesView/utils';
 import { useGetQueryRange } from 'hooks/queryBuilder/useGetQueryRange';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
+import useUrlYAxisUnit from 'hooks/useUrlYAxisUnit';
 import { AppState } from 'store/reducers';
 import { Warning } from 'types/api';
 import APIError from 'types/api/error';
@@ -52,13 +52,8 @@ function TimeSeriesViewContainer({
 		return isValid.every(Boolean);
 	}, [currentQuery]);

-	const [yAxisUnit, setYAxisUnit] = useState<string>(
-		isValidToConvertToMs ? 'ms' : 'short',
-	);
-
-	const onUnitChangeHandler = (value: string): void => {
-		setYAxisUnit(value);
-	};
+	const defaultUnit = isValidToConvertToMs ? 'ms' : 'short';
+	const { yAxisUnit, onUnitChange } = useUrlYAxisUnit(defaultUnit);

 	const { selectedTime: globalSelectedTime, maxTime, minTime } = useSelector<
 		AppState,
@@ -121,7 +116,7 @@ function TimeSeriesViewContainer({
 	return (
 		<div className="trace-explorer-time-series-view-container">
 			<div className="trace-explorer-time-series-view-container-header">
-				<BuilderUnitsFilter onChange={onUnitChangeHandler} yAxisUnit={yAxisUnit} />
+				<BuilderUnitsFilter onChange={onUnitChange} yAxisUnit={yAxisUnit} />
 			</div>
 			<TimeSeriesView
 				isFilterApplied={isFilterApplied}
--- a/frontend/src/tests/test-utils.tsx
+++ b/frontend/src/tests/test-utils.tsx
@@ -7,6 +7,7 @@ import { render, RenderOptions, RenderResult } from '@testing-library/react';
 import { FeatureKeys } from 'constants/features';
 import { ORG_PREFERENCES } from 'constants/orgPreferences';
 import { ResourceProvider } from 'hooks/useResourceAttribute';
+import { NuqsAdapter } from 'nuqs/adapters/react';
 import { AppContext } from 'providers/App/App';
 import { IAppContext } from 'providers/App/types';
 import { ErrorModalProvider } from 'providers/ErrorModalProvider';
@@ -280,23 +281,25 @@ export function AllTheProviders({

 	return (
 		<MemoryRouter initialEntries={[initialRouteValue]}>
-			<QueryClientProvider client={queryClient}>
-				<Provider store={mockStored(roleValue)}>
-					<AppContext.Provider
-						value={getAppContextMock(roleValue, appContextOverridesValue)}
-					>
-						<ResourceProvider>
-							<ErrorModalProvider>
-								<TimezoneProvider>
-									<PreferenceContextProvider>
-										{queryBuilderContent}
-									</PreferenceContextProvider>
-								</TimezoneProvider>
-							</ErrorModalProvider>
-						</ResourceProvider>
-					</AppContext.Provider>
-				</Provider>
-			</QueryClientProvider>
+			<NuqsAdapter>
+				<QueryClientProvider client={queryClient}>
+					<Provider store={mockStored(roleValue)}>
+						<AppContext.Provider
+							value={getAppContextMock(roleValue, appContextOverridesValue)}
+						>
+							<ResourceProvider>
+								<ErrorModalProvider>
+									<TimezoneProvider>
+										<PreferenceContextProvider>
+											{queryBuilderContent}
+										</PreferenceContextProvider>
+									</TimezoneProvider>
+								</ErrorModalProvider>
+							</ResourceProvider>
+						</AppContext.Provider>
+					</Provider>
+				</QueryClientProvider>
+			</NuqsAdapter>
 		</MemoryRouter>
 	);
 }
--- a/tests/integration/fixtures/clickhouse.py
+++ b/tests/integration/fixtures/clickhouse.py
@@ -75,8 +75,6 @@ def clickhouse(
                </cluster>
            </remote_servers>

-            <user_defined_executable_functions_config>*function.xml</user_defined_executable_functions_config>
-
            <distributed_ddl>
                <path>/clickhouse/task_queue/ddl</path>
                <profile>default</profile>
@@ -119,74 +117,17 @@ def clickhouse(
        </clickhouse>
        """

-        custom_function_config = """
-        <functions>
-            <function>
-                <type>executable</type>
-                <name>histogramQuantile</name>
-                <return_type>Float64</return_type>
-                <argument>
-                    <type>Array(Float64)</type>
-                    <name>buckets</name>
-                </argument>
-                <argument>
-                    <type>Array(Float64)</type>
-                    <name>counts</name>
-                </argument>
-                <argument>
-                    <type>Float64</type>
-                    <name>quantile</name>
-                </argument>
-                <format>CSV</format>
-                <command>./histogramQuantile</command>
-            </function>
-        </functions>
-        """
-
        tmp_dir = tmpfs("clickhouse")
        cluster_config_file_path = os.path.join(tmp_dir, "cluster.xml")
        with open(cluster_config_file_path, "w", encoding="utf-8") as f:
            f.write(cluster_config)

-        custom_function_file_path = os.path.join(tmp_dir, "custom-function.xml")
-        with open(custom_function_file_path, "w", encoding="utf-8") as f:
-            f.write(custom_function_config)
-
        container.with_volume_mapping(
            cluster_config_file_path, "/etc/clickhouse-server/config.d/cluster.xml"
        )
-        container.with_volume_mapping(
-            custom_function_file_path,
-            "/etc/clickhouse-server/custom-function.xml",
-        )
        container.with_network(network)
        container.start()

-        # Download and install the histogramQuantile binary
-        wrapped = container.get_wrapped_container()
-        exit_code, output = wrapped.exec_run(
-            [
-                "bash",
-                "-c",
-                (
-                    'version="v0.0.1" && '
-                    'node_os=$(uname -s | tr "[:upper:]" "[:lower:]") && '
-                    'node_arch=$(uname -m | sed s/aarch64/arm64/ | sed s/x86_64/amd64/) && '
-                    "cd /tmp && "
-                    'wget -O histogram-quantile.tar.gz "https://github.com/SigNoz/signoz/releases/download/histogram-quantile%2F${version}/histogram-quantile_${node_os}_${node_arch}.tar.gz" && '
-                    "tar -xzf histogram-quantile.tar.gz && "
-                    "mkdir -p /var/lib/clickhouse/user_scripts && "
-                    "mv histogram-quantile /var/lib/clickhouse/user_scripts/histogramQuantile && "
-                    "chmod +x /var/lib/clickhouse/user_scripts/histogramQuantile"
-                ),
-            ],
-        )
-        if exit_code != 0:
-            logger.warning(
-                "Failed to install histogramQuantile binary: %s",
-                output.decode(),
-            )
-
        connection = clickhouse_connect.get_client(
            user=container.username,
            password=container.password,
--- a/tests/integration/src/querier/08_metrics_histogram.py
+++ b/tests/integration/src/querier/08_metrics_histogram.py
@@ -372,153 +372,3 @@ def test_histogram_count_no_param(
            values[1]["value"] == first_values[le]
        )  ## to keep parallel to the cumulative test cases, first_value refers to the value at 10:02
        assert values[-1]["value"] == last_values[le]
-
-@pytest.mark.parametrize(
-    "space_agg, zeroth_value, first_value, last_value",
-    [
-        ("p50", 500, 818.182, 550.725),
-        ("p75", 750, 3000, 826.087),
-        ("p90", 900, 6400, 991.304),
-        ("p95", 950, 8000, 4200),
-        ("p99", 990, 8000, 8000),
-    ],
-)
-def test_histogram_percentile_for_all_services(
-    signoz: types.SigNoz,
-    create_user_admin: None,  # pylint: disable=unused-argument
-    get_token: Callable[[str, str], str],
-    insert_metrics: Callable[[List[Metrics]], None],
-    space_agg: str,
-    zeroth_value: float,
-    first_value: float,
-    last_value: float,
-) -> None:
-    now = datetime.now(tz=timezone.utc).replace(second=0, microsecond=0)
-    start_ms = int((now - timedelta(minutes=65)).timestamp() * 1000)
-    end_ms = int(now.timestamp() * 1000)
-    metric_name = f"test_{space_agg}_bucket"
-
-    metrics = Metrics.load_from_file(
-        FILE,
-        base_time=now - timedelta(minutes=60),
-        metric_name_override=metric_name,
-    )
-    insert_metrics(metrics)
-
-    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
-    query = build_builder_query(
-        "A",
-        metric_name,
-        "doesnotreallymatter",
-        space_agg,
-    )
-
-    response = make_query_request(signoz, token, start_ms, end_ms, [query])
-    assert response.status_code == HTTPStatus.OK
-
-    data = response.json()
-    result_values = sorted(get_series_values(data, "A"), key=lambda x: x["timestamp"])
-    assert len(result_values) == 60
-    assert result_values[0]["value"] == zeroth_value
-    assert result_values[1]["value"] == first_value
-    assert result_values[-1]["value"] == last_value
-
-@pytest.mark.parametrize(
-    "space_agg, first_value, last_value",
-    [
-        ("p50", 818.182, 550.725),
-        ("p75", 3000, 826.087),
-        ("p90", 6400, 991.304),
-        ("p95", 8000, 4200),
-        ("p99", 8000, 8000),
-    ],
-)
-def test_histogram_percentile_for_cumulative_service(
-    signoz: types.SigNoz,
-    create_user_admin: None,  # pylint: disable=unused-argument
-    get_token: Callable[[str, str], str],
-    insert_metrics: Callable[[List[Metrics]], None],
-    space_agg: str,
-    first_value: float,
-    last_value: float,
-) -> None:
-    now = datetime.now(tz=timezone.utc).replace(second=0, microsecond=0)
-    start_ms = int((now - timedelta(minutes=65)).timestamp() * 1000)
-    end_ms = int(now.timestamp() * 1000)
-    metric_name = f"test_{space_agg}_cumulative_bucket"
-
-    metrics = Metrics.load_from_file(
-        FILE,
-        base_time=now - timedelta(minutes=60),
-        metric_name_override=metric_name,
-    )
-    insert_metrics(metrics)
-
-    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
-    query = build_builder_query(
-        "A",
-        metric_name,
-        "doesnotreallymatter",
-        space_agg,
-        filter_expression='service = "api"',
-    )
-
-    response = make_query_request(signoz, token, start_ms, end_ms, [query])
-    assert response.status_code == HTTPStatus.OK
-
-    data = response.json()
-    result_values = sorted(get_series_values(data, "A"), key=lambda x: x["timestamp"])
-    assert len(result_values) == 59
-    assert result_values[0]["value"] == first_value
-    assert result_values[-1]["value"] == last_value
-
-@pytest.mark.parametrize(
-    "space_agg, zeroth_value, first_value, last_value",
-    [
-        ("p50", 500, 818.182, 550.725),
-        ("p75", 750, 3000, 826.087),
-        ("p90", 900, 6400, 991.304),
-        ("p95", 950, 8000, 4200),
-        ("p99", 990, 8000, 8000),
-    ],
-)
-def test_histogram_percentile_for_delta_service(
-    signoz: types.SigNoz,
-    create_user_admin: None,  # pylint: disable=unused-argument
-    get_token: Callable[[str, str], str],
-    insert_metrics: Callable[[List[Metrics]], None],
-    space_agg: str,
-    zeroth_value: float,
-    first_value: float,
-    last_value: float,
-) -> None:
-    now = datetime.now(tz=timezone.utc).replace(second=0, microsecond=0)
-    start_ms = int((now - timedelta(minutes=65)).timestamp() * 1000)
-    end_ms = int(now.timestamp() * 1000)
-    metric_name = f"test_{space_agg}_bucket"
-
-    metrics = Metrics.load_from_file(
-        FILE,
-        base_time=now - timedelta(minutes=60),
-        metric_name_override=metric_name,
-    )
-    insert_metrics(metrics)
-
-    token = get_token(USER_ADMIN_EMAIL, USER_ADMIN_PASSWORD)
-    query = build_builder_query(
-        "A",
-        metric_name,
-        "doesnotreallymatter",
-        space_agg,
-        filter_expression='service = "web"',
-    )
-
-    response = make_query_request(signoz, token, start_ms, end_ms, [query])
-    assert response.status_code == HTTPStatus.OK
-
-    data = response.json()
-    result_values = sorted(get_series_values(data, "A"), key=lambda x: x["timestamp"])
-    assert len(result_values) == 60
-    assert result_values[0]["value"] == zeroth_value
-    assert result_values[1]["value"] == first_value
-    assert result_values[-1]["value"] == last_value
Author	SHA1	Message	Date
aks07	7e2cf57819	Merge branch 'main' of github.com:SigNoz/signoz into feat/trace-flamegraph	2026-03-11 12:24:06 +05:30
Ishan	f7140832d0	Fix - Handling for resource. prefix in quick filters (#10497 ) * fix: resource added in checkbox * fix: resource name handling * fix: added testcases * fix: updated for other types as well * fix: updated testcases * fix: pr comments	2026-03-11 06:31:53 +00:00
Yunus M	8c5ff10b42	feat: update url with y-axis unit (#10530 ) * feat: update url with y-axis unit * feat: implement useUrlYAxisUnit hook for y-axis unit management * feat: use nuqs for handling query param updates * chore: whitelist nuqs in jest * chore: add nuqs to test utils	2026-03-11 05:10:47 +00:00
Vishal Sharma	12c0df8410	feat(onboarding): add configs and SVGs for 9 new datasources (#10552 ) * chore: add new integration logos and update onboarding configurations and related files * fix(logos): add viewBox attribute to huggingface svg for proper scaling	2026-03-11 04:58:18 +00:00
aks07	dc9ebc5b26	feat: add test utils	2026-03-11 03:31:10 +05:30
aks07	398ab6e9d9	feat: add test cases for flamegraph	2026-03-11 03:28:35 +05:30
aks07	fec60671d8	feat: minor comment added	2026-03-11 03:03:49 +05:30
aks07	99259cc4e8	feat: remove unnecessary props	2026-03-10 16:01:24 +05:30
aks07	ca311717c2	feat: bg color for selected and hover spans	2026-03-06 23:16:35 +05:30
aks07	a614da2c65	fix: update color	2026-03-06 20:22:23 +05:30
aks07	ce18709002	fix: style fix	2026-03-06 20:03:42 +05:30
aks07	2b6977e891	feat: reduce timeline intervals	2026-03-06 20:01:50 +05:30
aks07	3e6eedbcab	feat: fix style	2026-03-06 19:57:19 +05:30
aks07	fd9e3f0411	feat: fix style	2026-03-06 19:26:23 +05:30
aks07	e99465e030	Merge branch 'main' of github.com:SigNoz/signoz into feat/trace-flamegraph	2026-03-06 18:45:18 +05:30
aks07	9ad2db4b99	feat: scroll to selected span	2026-03-06 16:00:48 +05:30
aks07	07fd5f70ef	feat: fix timerange unit selection when zoomed	2026-03-06 12:55:34 +05:30
aks07	ba79121795	feat: temp change	2026-03-06 12:49:06 +05:30
aks07	6e4e419b5e	Merge branch 'main' of github.com:SigNoz/signoz into feat/trace-flamegraph	2026-03-06 10:30:41 +05:30
aks07	2f06afaf27	feat: handle click and hover with tooltip	2026-03-05 23:25:10 +05:30
aks07	f77c3cb23c	feat: update span colors	2026-03-05 22:40:06 +05:30
aks07	9e3a8efcfc	feat: zoom and drag added	2026-03-05 18:22:55 +05:30
aks07	8e325ba8b3	feat: added timeline v3	2026-03-05 12:31:17 +05:30
aks07	884f516766	feat: add text to spans	2026-03-03 12:20:06 +05:30
aks07	4bcbb4ffc3	feat: flamegraph canvas init	2026-03-02 19:21:23 +05:30
				`@@ -0,0 +1 @@`
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