Title: PerformanceAgent PerformanceAgent – call tree focus run generates an answer
Content:
[
  {
    "type": "context",
    "details": [
      {
        "title": "Trace details",
        "text": "Trace summary:\nURL: https://web.dev/\nTrace bounds: {min: 465455241690µs, max: 465460435979µs}\nCPU throttling: 1x\nNetwork throttling: No throttling\n\n# Available insight sets\n\nThe following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one.\n\n## insight set id: NO_NAVIGATION\n\nURL: https://web.dev/\nBounds: {min: 465455241690µs, max: 465456489730µs}\nMetrics (lab / observed):\n  - CLS: 0.00\nMetrics (field / real users): n/a – no data for this page in CrUX\nAvailable insights:\n  - insight name: ThirdParties\n    description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page’s content.\n    relevant trace bounds: {min: 465456492168µs, max: 465460052616µs}\n    example question: Which third parties are having the largest impact on my page performance?\n\n## insight set id: NAVIGATION_1\n\nURL: https://web.dev/\nBounds: {min: 465456489730µs, max: 465460435979µs}\nMetrics (lab / observed):\n  - LCP: 676 ms, event: (eventKey: r-21246, ts: 465457166052), nodeId: 1680\n  - LCP breakdown:\n    - TTFB: 553 ms, bounds: {min: 465456489730µs, max: 465457042737µs}\n    - Render delay: 123 ms, bounds: {min: 465457042737µs, max: 465457166052µs}\n  - CLS: 0.02, event: (eventKey: s-14250, ts: 465457121239)\nMetrics (field / real users): n/a – no data for this page in CrUX\nAvailable insights:\n  - insight name: RenderBlocking\n    description: Requests are blocking the page’s initial render, which may delay LCP. [Deferring or inlining](https://developer.chrome.com/docs/performance/insights/render-blocking) can move these network requests out of the critical path.\n    relevant trace bounds: {min: 465457046567µs, max: 465457086893µs}\n    estimated metric savings: FCP 118 ms, LCP 118 ms\n    example question: Show me the most impactful render-blocking requests that I should focus on\n    example question: How can I reduce the number of render-blocking requests?\n  - insight name: LCPBreakdown\n    description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays.\n    relevant trace bounds: {min: 465456489730µs, max: 465457166052µs}\n    example question: Help me optimize my LCP score\n    example question: Which LCP subpart was most problematic?\n    example question: What can I do to reduce the LCP time for this page load?\n  - insight name: CLSCulprits\n    description: Layout shifts occur when elements move absent any user interaction. [Investigate the causes of layout shifts](https://developer.chrome.com/docs/performance/insights/cls-culprit), such as elements being added, removed, or their fonts changing as the page loads.\n    relevant trace bounds: {min: 465457121239µs, max: 465459012394µs}\n    example question: Help me optimize my CLS score\n    example question: How can I prevent layout shifts on this page?\n  - insight name: NetworkDependencyTree\n    description: [Avoid chaining critical requests](https://developer.chrome.com/docs/performance/insights/network-dependency-tree) by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.\n    relevant trace bounds: {min: 465456490723µs, max: 465458472724µs}\n    example question: How do I optimize my network dependency tree?\n  - insight name: DOMSize\n    description: A large DOM can increase the duration of style calculations and layout reflows, impacting page responsiveness. A large DOM will also increase memory usage. [Learn how to avoid an excessive DOM size](https://developer.chrome.com/docs/performance/insights/dom-size).\n    relevant trace bounds: {min: 465458287196µs, max: 465458340745µs}\n    example question: How can I reduce the size of my DOM?\n  - insight name: ThirdParties\n    description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page’s content.\n    relevant trace bounds: {min: 465456492168µs, max: 465460052616µs}\n    example question: Which third parties are having the largest impact on my page performance?\n  - insight name: ForcedReflow\n    description: A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about [forced reflows](https://developer.chrome.com/docs/performance/insights/forced-reflow) and possible mitigations.\n    relevant trace bounds: {min: 465456489730µs, max: 465460435979µs}\n    example question: How can I avoid forced reflows and layout thrashing?\n    example question: What is forced reflow and why is it problematic?\n  - insight name: Cache\n    description: A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache).\n    relevant trace bounds: {min: 465457179567µs, max: 465459110674µs}\n    estimated metric savings: FCP 0 ms, LCP 0 ms\n    estimated wasted bytes: 16 kB\n    example question: What caching strategies can I apply to improve my page performance?\n# Critical network requests\n\n## insight set id: NO_NAVIGATION\n\nnone\n\n## insight set id: NAVIGATION_1\n\n\nNetwork requests data:\n\n\n\nallUrls = [0: https://web.dev/, 1: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fCxc4AMP6lbBP.woff2, 2: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fBxc4AMP6lbBP.woff2, 3: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fABc4AMP6lbBP.woff2, 4: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fChc4AMP6lbBP.woff2, 5: https://fonts.gstatic.com/s/materialicons/v142/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.woff2, 6: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fBBc4AMP6lQ.woff2, 7: https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxKKTU1Kg.woff2, 8: https://web.dev/_pwa/web/manifest.json, 9: https://fonts.googleapis.com/css?family=Google+Sans:400,500|Roboto:400,400italic,500,500italic,700,700italic|Roboto+Mono:400,500,700&display=swap, 10: https://fonts.gstatic.com/s/googlesans/v59/4UasrENHsxJlGDuGo1OIlJfC6l_24rlCK1Yo_Iqcsih3SAyH6cAwhX9RPjIUvbQoi-E.woff2, 11: https://fonts.googleapis.com/css2?family=Material+Icons&family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200&display=block, 12: https://www.gstatic.com/devrel-devsite/prod/vafe2e13ca17bb026e70df42a2ead1c8192750e86a12923a88eda839025dabf95/web/css/app.css, 13: https://web.dev/extras.css]\n\n0;s-7302;1 ms;2 ms;568 ms;569 ms;568 ms;15 ms;0.5 ms;200;text/html;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[content-security-policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-pLl1WHuNABXXiQLLmUesvDyvzBJZdE' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2|content-encoding: gzip|x-content-type-options: nosniff|date: Mon, 29 Apr 2024 11:01:15 GMT|strict-transport-security: max-age=63072000; includeSubdomains; preload|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|pragma: no-cache|last-modified: Fri, 26 Apr 2024 16:43:17 GMT|server: Google Frontend|vary: Cookie, Accept-Encoding|x-frame-options: SAMEORIGIN|content-type: text/html; charset=utf-8|x-cloud-trace-context: <redacted>|cache-control: no-cache, must-revalidate|expires: 0]\n1;s-49309;1,395 ms;1,402 ms;1,415 ms;1,423 ms;28 ms;94 μs;9 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Wed, 24 Apr 2024 15:02:33 GMT|x-content-type-options: nosniff|age: 417214|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:58 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Thu, 24 Apr 2025 15:02:33 GMT]\n2;s-46519;1,348 ms;1,355 ms;1,361 ms;1,423 ms;75 ms;73 μs;62 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Mon, 29 Apr 2024 03:50:51 GMT|x-content-type-options: nosniff|age: 25516|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:41 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Tue, 29 Apr 2025 03:50:51 GMT]\n3;s-46196;1,331 ms;1,339 ms;1,355 ms;1,420 ms;89 ms;0.1 ms;65 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Fri, 26 Apr 2024 20:29:46 GMT|x-content-type-options: nosniff|age: 224781|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:39 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Sat, 26 Apr 2025 20:29:46 GMT]\n4;s-45814;1,326 ms;1,331 ms;1,348 ms;1,419 ms;93 ms;77 μs;71 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Thu, 25 Apr 2024 13:27:47 GMT|x-content-type-options: nosniff|age: 336500|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:56 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Fri, 25 Apr 2025 13:27:47 GMT]\n5;s-44751;1,286 ms;1,307 ms;1,343 ms;1,416 ms;130 ms;1 ms;73 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Fri, 26 Apr 2024 09:49:05 GMT|x-content-type-options: nosniff|age: 263222|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Mon, 08 Apr 2024 19:04:51 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Sat, 26 Apr 2025 09:49:05 GMT]\n6;s-44728;1,285 ms;1,307 ms;1,343 ms;1,406 ms;120 ms;1 ms;62 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Sun, 28 Apr 2024 21:44:44 GMT|x-content-type-options: nosniff|age: 47483|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:53 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Mon, 28 Apr 2025 21:44:44 GMT]\n7;s-44701;1,284 ms;1,300 ms;1,339 ms;1,405 ms;120 ms;0.2 ms;65 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Thu, 25 Apr 2024 09:35:28 GMT|x-content-type-options: nosniff|age: 350439|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 11 May 2022 19:24:50 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Fri, 25 Apr 2025 09:35:28 GMT]\n8;s-43119;1,751 ms;1,751 ms;1,771 ms;1,771 ms;20 ms;27 μs;0.2 ms;200;application/json;Medium;Medium;Medium;f;unknown;t;0;[];[date: Sun, 28 Apr 2024 14:07:49 GMT|last-modified: Wed, 24 Apr 2024 11:02:59 GMT|server: Google Frontend|age: 75208|content-type: application/json|x-cloud-trace-context: <redacted>|cache-control: public, max-age=86400|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>]\n9;s-7695;557 ms;557 ms;597 ms;597 ms;40 ms;3 ms;0.6 ms;200;text/css;VeryHigh;VeryHigh;VeryHigh;t;unknown;t;0;[];[date: Mon, 29 Apr 2024 11:01:15 GMT|content-encoding: gzip|x-content-type-options: nosniff|strict-transport-security: max-age=31536000|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|x-xss-protection: 0|last-modified: Mon, 29 Apr 2024 10:51:49 GMT|server: ESF|cross-origin-opener-policy: <redacted>|x-frame-options: SAMEORIGIN|content-type: text/css; charset=utf-8|access-control-allow-origin: *|cache-control: private, max-age=86400, stale-while-revalidate=604800|timing-allow-origin: *|link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin|expires: Mon, 29 Apr 2024 11:01:15 GMT]\n7;s-34909;770 ms;770 ms;771 ms;776 ms;6 ms;40 μs;5 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[x-google-security-signals: <redacted>|x-google-gfe-service-trace: <redacted>|content-security-policy-report-only: <redacted>|x-google-scs-row-timestamp: <redacted>|x-google-gfe-response-code-details-trace: <redacted>|cross-origin-resource-policy: <redacted>|x-google-scs-row-key: <redacted>|content-type: font/woff2|access-control-allow-origin: *|x-google-data-version: <redacted>|cache-control: public, max-age=31536000|x-google-gfe-backend-request-info: <redacted>|x-google-dos-service-trace: <redacted>|x-google-backends: <redacted>|date: Thu, 26 Oct 2023 10:46:00 GMT|x-content-type-options: nosniff|expires: Fri, 25 Oct 2024 10:46:00 GMT|x-google-gfe-version: <redacted>|x-google-netmon-label: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-google-service: <redacted>|x-xss-protection: 0|x-google-gfe-handshake-trace: <redacted>|x-google-shellfish-status: <redacted>|last-modified: Wed, 11 May 2022 19:24:50 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|x-google-gfe-request-trace: <redacted>|accept-ranges: bytes|timing-allow-origin: *|x-google-scs-repo: <redacted>]\n10;s-11121;602 ms;602 ms;603 ms;611 ms;9 ms;27 μs;8 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;;[];[date: Thu, 25 Apr 2024 15:44:03 GMT|x-content-type-options: nosniff|age: 328319|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Wed, 24 Apr 2024 23:37:14 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Fri, 25 Apr 2025 15:44:03 GMT]\n11;s-7703;557 ms;557 ms;597 ms;597 ms;40 ms;90 μs;0.1 ms;200;text/css;VeryHigh;VeryHigh;VeryHigh;t;unknown;t;0;[];[date: Mon, 29 Apr 2024 11:01:15 GMT|content-encoding: gzip|x-content-type-options: nosniff|strict-transport-security: max-age=31536000|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|x-xss-protection: 0|last-modified: Mon, 29 Apr 2024 11:01:15 GMT|server: ESF|cross-origin-opener-policy: <redacted>|x-frame-options: SAMEORIGIN|content-type: text/css; charset=utf-8|access-control-allow-origin: *|cache-control: private, max-age=86400, stale-while-revalidate=604800|timing-allow-origin: *|link: <https://fonts.gstatic.com>; rel=preconnect; crossorigin|expires: Mon, 29 Apr 2024 11:01:15 GMT]\n5;s-11334;606 ms;606 ms;607 ms;615 ms;9 ms;30 μs;8 ms;200;font/woff2;VeryHigh;VeryHigh;VeryHigh;f;unknown;t;11;[];[date: Fri, 26 Apr 2024 09:49:05 GMT|x-content-type-options: nosniff|age: 263217|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Mon, 08 Apr 2024 19:04:51 GMT|server: sffe|cross-origin-opener-policy: <redacted>|report-to: {\"group\":\"apps-themes\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/apps-themes\"}]}|content-type: font/woff2|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|timing-allow-origin: *|expires: Sat, 26 Apr 2025 09:49:05 GMT]\n12;s-7722;557 ms;557 ms;562 ms;568 ms;11 ms;0.5 ms;6 ms;200;text/css;VeryHigh;VeryHigh;VeryHigh;t;unknown;t;0;[];[date: Mon, 29 Apr 2024 10:56:02 GMT|content-encoding: gzip|x-content-type-options: nosniff|age: 256|content-security-policy-report-only: <redacted>|cross-origin-resource-policy: <redacted>|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|last-modified: Thu, 25 Apr 2024 19:58:26 GMT|server: sffe|cross-origin-opener-policy: <redacted>|vary: Accept-Encoding|report-to: {\"group\":\"devrel-devsite\",\"max_age\":2592000,\"endpoints\":[{\"url\":\"https://csp.withgoogle.com/csp/report-to/devrel-devsite\"}]}|content-type: text/css|access-control-allow-origin: *|cache-control: public, max-age=31536000|accept-ranges: bytes|expires: Tue, 29 Apr 2025 10:56:02 GMT]\n13;s-7737;557 ms;557 ms;561 ms;561 ms;4 ms;0.4 ms;0.2 ms;200;text/css;VeryHigh;VeryHigh;VeryHigh;t;unknown;t;0;[];[content-security-policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-laTwEoovJjOKcMoBUjSFaYO6rrF8dU' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2|content-encoding: gzip|x-content-type-options: nosniff|date: Mon, 29 Apr 2024 11:00:18 GMT|strict-transport-security: max-age=63072000; includeSubdomains; preload|alt-svc: h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000|content-length: <redacted>|x-xss-protection: 0|pragma: no-cache|last-modified: Tue, 19 Mar 2024 18:37:07 GMT|server: Google Frontend|vary: Cookie, Accept-Encoding|x-frame-options: SAMEORIGIN|content-type: text/css|x-cloud-trace-context: <redacted>|cache-control: no-cache, must-revalidate|expires: 0]\n\n# Main thread bottom-up summary\n\nThis is the bottom-up summary for the entire trace. Only the top 10 activities (sorted by self time) are shown. An activity is all the aggregated time spent on the same type of work. For example, it can be all the time spent in a specific JavaScript function, or all the time spent in a specific browser rendering stage (like layout, v8 compile, parsing html). \"Self time\" represents the aggregated time spent directly in an activity, across all occurrences. \"Total time\" represents the aggregated time spent in an activity or any of its children.\n\n## insight set id: NO_NAVIGATION\n\n- self: 12 ms, total: 12 ms, source: Profiling overhead\n- self: 4 ms, total: 28 ms, source: Task\n- self: 3 ms, total: 4 ms, source: Recalculate style (url: https://www.gstatic.com/devrel-devsite/prod/vafe2e13ca17bb026e70df42a2ead1c8192750e86a12923a88eda839025dabf95/js/devsite_app_module.js, line: 98, column: 12)\n- self: 2 ms, total: 2 ms, source: Commit\n- self: 0.9 ms, total: 2 ms, source: Function call (url: https://www.gstatic.com/devrel-devsite/prod/vafe2e13ca17bb026e70df42a2ead1c8192750e86a12923a88eda839025dabf95/js/devsite_app_module.js, line: 102, column: 35)\n- self: 0.8 ms, total: 13 ms, source: Evaluate script\n- self: 0.7 ms, total: 3 ms, source: Event: pointerover\n- self: 0.1 ms, total: 1 ms, source: Xh (url: https://www.gstatic.com/devrel-devsite/prod/vafe2e13ca17bb026e70df42a2ead1c8192750e86a12923a88eda839025dabf95/js/devsite_app_module.js, line: 104, column: 61)\n\n## insight set id: NAVIGATION_1\n\n- self: 46 ms, total: 49 ms, source: Recalculate style\n- self: 37 ms, total: 211 ms, source: Task\n- self: 21 ms, total: 22 ms, source: Layout\n- self: 17 ms, total: 19 ms, source: Compile code\n- self: 7 ms, total: 7 ms, source: Cache script code\n- self: 6 ms, total: 26 ms, source: Function call (url: https://www.gstatic.com/devrel-devsite/prod/vafe2e13ca17bb026e70df42a2ead1c8192750e86a12923a88eda839025dabf95/js/devsite_app_module.js, line: 288, column: 146)\n- self: 5 ms, total: 5 ms, source: Parse stylesheet\n- self: 5 ms, total: 5 ms, source: Pre-paint\n- self: 5 ms, total: 5 ms, source: Commit\n- self: 5 ms, total: 10 ms, source: appendChild\n\n# 3rd party summary\n\n## insight set id: NO_NAVIGATION\n\n- name: Google CDN, main thread time: 1 ms, network transfer size: 0 B\n\n## insight set id: NAVIGATION_1\n\n- name: Google CDN, main thread time: 38 ms, network transfer size: 990 B\n- name: web.dev, main thread time: 3 ms, network transfer size: 84.3 kB\n- name: Google Analytics, main thread time: 0.6 ms, network transfer size: 52.9 kB\n- name: Google Fonts, main thread time: 0 ms, network transfer size: 42.2 kB\n\n# Longest tasks\n\n## insight set id: NO_NAVIGATION\n\n- total time: 13 ms, event: (eventKey: r-96, ts: 465455241964)\n- total time: 2 ms, event: (eventKey: r-934, ts: 465455475572)\n- total time: 1 ms, event: (eventKey: r-2310, ts: 465455879141)\n\n## insight set id: NAVIGATION_1\n\n- total time: 18 ms, event: (eventKey: r-20182, ts: 465457150438)\n- total time: 14 ms, event: (eventKey: r-12184, ts: 465457104625)\n- total time: 12 ms, event: (eventKey: r-10779, ts: 465457087373)\n\nUser selected the following call tree:\n\n\n\n# Call tree:\n\n1;r-10779;Task;3;;;2;;\n2;r-11902;Layout;3;3;;;;;S\n\n\n# User query\n\ntest"
      }
    ],
    "widgets": [
      {
        "name": "TIMELINE_RANGE_SUMMARY"
      },
      {
        "name": "BOTTOM_UP_TREE"
      }
    ]
  },
  {
    "type": "querying"
  },
  {
    "type": "answer",
    "text": "This is the answer",
    "complete": true,
    "rpcId": 123
  }
]
=== end content

Title: PerformanceAgent handleContextDetails outputs the right context for the initial query from the user
Content:
[
  {
    "type": "context",
    "details": [
      {
        "title": "Trace details",
        "text": "Trace summary:\nURL: https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html\nTrace bounds: {min: 658799706428µs, max: 658804825864µs}\nCPU throttling: 1x\nNetwork throttling: No throttling\n\n# Available insight sets\n\nThe following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one.\n\n## insight set id: NAVIGATION_0\n\nURL: https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html\nBounds: {min: 658799738257µs, max: 658804825864µs}\nMetrics (lab / observed):\n  - LCP: 110 ms, event: (eventKey: r-2399, ts: 658799847880), nodeId: 10\n  - LCP breakdown:\n    - TTFB: 7 ms, bounds: {min: 658799738257µs, max: 658799745193µs}\n    - Load delay: 34 ms, bounds: {min: 658799745193µs, max: 658799778937µs}\n    - Load duration: 12 ms, bounds: {min: 658799778937µs, max: 658799791032µs}\n    - Render delay: 57 ms, bounds: {min: 658799791032µs, max: 658799847880µs}\n  - CLS: 0.00\nMetrics (field / real users): n/a – no data for this page in CrUX\nAvailable insights:\n  - insight name: LCPBreakdown\n    description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays.\n    relevant trace bounds: {min: 658799738257µs, max: 658799847880µs}\n    example question: Help me optimize my LCP score\n    example question: Which LCP subpart was most problematic?\n    example question: What can I do to reduce the LCP time for this page load?\n  - insight name: LCPDiscovery\n    description: [Optimize LCP](https://developer.chrome.com/docs/performance/insights/lcp-discovery) by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading\n    relevant trace bounds: {min: 658799745193µs, max: 658799793683µs}\n    example question: Suggest fixes to reduce my LCP\n    example question: What can I do to reduce my LCP discovery time?\n    example question: Why is LCP discovery time important?\n  - insight name: RenderBlocking\n    description: Requests are blocking the page’s initial render, which may delay LCP. [Deferring or inlining](https://developer.chrome.com/docs/performance/insights/render-blocking) can move these network requests out of the critical path.\n    relevant trace bounds: {min: 658799775876µs, max: 658799791419µs}\n    example question: Show me the most impactful render-blocking requests that I should focus on\n    example question: How can I reduce the number of render-blocking requests?\n  - insight name: Cache\n    description: A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache).\n    relevant trace bounds: {min: 658799777502µs, max: 658799791419µs}\n    example question: What caching strategies can I apply to improve my page performance?\n# Critical network requests\n\nnone\n\n# Main thread bottom-up summary\n\nThis is the bottom-up summary for the entire trace. Only the top 10 activities (sorted by self time) are shown. An activity is all the aggregated time spent on the same type of work. For example, it can be all the time spent in a specific JavaScript function, or all the time spent in a specific browser rendering stage (like layout, v8 compile, parsing html). \"Self time\" represents the aggregated time spent directly in an activity, across all occurrences. \"Total time\" represents the aggregated time spent in an activity or any of its children.\n\n- self: 57 ms, total: 79 ms, source: Task\n- self: 5 ms, total: 5 ms, source: Layout\n- self: 4 ms, total: 4 ms, source: Major GC\n- self: 3 ms, total: 3 ms, source: Parse HTML\n- self: 2 ms, total: 2 ms, source: Recalculate style\n- self: 2 ms, total: 2 ms, source: Commit\n- self: 1 ms, total: 1 ms, source: C++ GC\n- self: 1 ms, total: 1 ms, source: Paint\n\n# 3rd party summary\n\n- name: GitHub, main thread time: 3 ms, network transfer size: 0 B\n\n# Longest tasks\n\n- total time: 23 ms, event: (eventKey: r-617, ts: 658799757023)\n- total time: 12 ms, event: (eventKey: r-1571, ts: 658799793885)\n- total time: 11 ms, event: (eventKey: r-1891, ts: 658799811130)\n\nUser selected the LCPBreakdown insight.\n\n\n# User query\n\ntest"
      }
    ],
    "widgets": [
      {
        "name": "PERF_INSIGHT"
      },
      {
        "name": "CORE_VITALS"
      }
    ]
  },
  {
    "type": "querying"
  },
  {
    "type": "answer",
    "text": "This is the answer",
    "complete": true,
    "rpcId": 123
  }
]
=== end content
