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chromium / chromium / src / feece085c2eacd32eacfa0cd6e47c5adedbea01a
commitfeece085c2eacd32eacfa0cd6e47c5adedbea01a[log] [tgz]
authorJoe Mason <joenotcharles@google.com>Thu Apr 03 16:16:05 2025
committerChromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu Apr 03 16:16:05 2025
tree17406eaaf785e0667a372788653885ace8b6dbbf
parentcc108d224a1da4089e9719cf59339bb6e4aa09bb [diff]
Add PerformanceManager.NavigationToLoadedIdle metric

PageLoad.Clients.PerformanceManager.LCPToLoadedIdle and related metrics
log the difference between LCP and PerformanceManager's LoadedIdle time,
which is the basis for performance_scenarios::LoadingScenario. This is
useful to judge how much extra overhead page loads have beyond LCP.
However the metrics that are logged for pages that don't reach
LoadedIdle are less useful.

Add related metrics NavigationToLoadedIdle, which logs the full time
until LoadedIdle (not relative to LCP), and NavigationWithoutLoadedIdle,
which logs the time until a navigation is abandoned without reaching
LoadedIdle. These are easier to compare and closes a blind spot in the
LCP metrics.

Bug: 365586676
Change-Id: I34c8d608c58bc2ee8505ec60a38f8ec0c61916ae
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6420450
Feels: Joe Mason <joenotcharles@google.com>
Auto-Submit: Joe Mason <joenotcharles@google.com>
Commit-Queue: Joe Mason <joenotcharles@google.com>
Reviewed-by: Takashi Toyoshima <toyoshim@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1442204}
3 files changed
tree: 17406eaaf785e0667a372788653885ace8b6dbbf
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. build/
  6. build_overrides/
  7. buildtools/
  8. cc/
  9. chrome/
  10. chromecast/
  11. chromeos/
  12. codelabs/
  13. components/
  14. content/
  15. crypto/
  16. dbus/
  17. device/
  18. docs/
  19. extensions/
  20. fuchsia_web/
  21. gin/
  22. google_apis/
  23. gpu/
  24. headless/
  25. infra/
  26. ios/
  27. ipc/
  28. media/
  29. mojo/
  30. native_client_sdk/
  31. net/
  32. pdf/
  33. ppapi/
  34. printing/
  35. remoting/
  36. rlz/
  37. sandbox/
  38. services/
  39. skia/
  40. sql/
  41. storage/
  42. styleguide/
  43. testing/
  44. third_party/
  45. tools/
  46. ui/
  47. url/
  48. webkit/
  49. clank
  50. internal
  51. ios_internal
  52. native_client
  53. signing_keys
  54. v8
  55. .clang-format
  56. .clang-tidy
  57. .clangd
  58. .git-blame-ignore-revs
  59. .gitallowed
  60. .gitattributes
  61. .gitignore
  62. .gitmodules
  63. .gn
  64. .mailmap
  65. .rustfmt.toml
  66. .vpython3
  67. .yapfignore
  68. ATL_OWNERS
  69. AUTHORS
  70. BUILD.gn
  71. CODE_OF_CONDUCT.md
  72. codereview.settings
  73. CPPLINT.cfg
  74. CRYPTO_OWNERS
  75. DEPS
  76. DIR_METADATA
  77. LICENSE
  78. LICENSE.chromium_os
  79. OWNERS
  80. PRESUBMIT.py
  81. PRESUBMIT_test.py
  82. PRESUBMIT_test_mocks.py
  83. README.md
  84. WATCHLISTS
README.md

Logo Chromium

Chromium is an open-source browser project that aims to build a safer, faster, and more stable way for all users to experience the web.

The project's web site is https://www.chromium.org.

To check out the source code locally, don't use git clone! Instead, follow the instructions on how to get the code.

Documentation in the source is rooted in docs/README.md.

Learn how to Get Around the Chromium Source Code Directory Structure.

For historical reasons, there are some small top level directories. Now the guidance is that new top level directories are for product (e.g. Chrome, Android WebView, Ash). Even if these products have multiple executables, the code should be in subdirectories of the product.

If you found a bug, please file it at https://crbug.com/new.