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chromium / chromium / src / a572c15dbd6326c4bc8747200e546e4431bbab3c
commita572c15dbd6326c4bc8747200e546e4431bbab3c[log] [tgz]
authorbehdad <[email protected]>Thu Jun 20 19:42:37 2019
committerCommit Bot <[email protected]>Thu Jun 20 19:42:37 2019
tree2d1c883fb98d10989263bdd63dc3346fcd71fb7e
parentd5add234bac0ecd0d113465686c0684d2b51e8fe [diff]
Report the latency increase of pipeline stages in missed frames compared to not missed frames

This Cl reports the duration of each stage in Compositor well as the duration of each stage only
when the frame is missed.
Also a history of non missed frames will be recorded to be compared to the stages of missed frames.
If the stage duration of a missed frame is higher than 95pct of recorded history (50 instances
will be recorded), the duration increase of that stage will be also reported to UMA.

This would help with recognizing the stages which might have caused the frame to be missed.

The format for duration increase of these abnormal stages are shown in
histograms as:
"[SingleThreaded]CompositorLatency.MissedFrames.LatencyIncrease.<StageName>".

Doc:
https://docs.google.com/document/d/1UDVTqBKckFVSyxhdebCFIiupUwFmHkT7h0G_HjxZGsA/edit?usp=sharing

Bug: chromium:963785
Change-Id: Ia4bf51e4e5589154d7c02d82c32377a20719d751
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1631725
Commit-Queue: Behdad Bakhshinategh <[email protected]>
Reviewed-by: Brian White <[email protected]>
Reviewed-by: Robert Flack <[email protected]>
Reviewed-by: Sunny Sachanandani <[email protected]>
Reviewed-by: Sadrul Chowdhury <[email protected]>
Cr-Commit-Position: refs/heads/master@{#671009}
14 files changed
tree: 2d1c883fb98d10989263bdd63dc3346fcd71fb7e
  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. cloud_print/
  13. components/
  14. content/
  15. courgette/
  16. crypto/
  17. dbus/
  18. device/
  19. docs/
  20. extensions/
  21. fuchsia/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. jingle/
  31. media/
  32. mojo/
  33. native_client_sdk/
  34. net/
  35. pdf/
  36. ppapi/
  37. printing/
  38. remoting/
  39. rlz/
  40. sandbox/
  41. services/
  42. skia/
  43. sql/
  44. storage/
  45. styleguide/
  46. testing/
  47. third_party/
  48. tools/
  49. ui/
  50. url/
  51. .clang-format
  52. .eslintrc.js
  53. .git-blame-ignore-revs
  54. .gitattributes
  55. .gitignore
  56. .gn
  57. .vpython
  58. AUTHORS
  59. BUILD.gn
  60. CODE_OF_CONDUCT.md
  61. codereview.settings
  62. DEPS
  63. ENG_REVIEW_OWNERS
  64. LICENSE
  65. LICENSE.chromium_os
  66. OWNERS
  67. PRESUBMIT.py
  68. PRESUBMIT_test.py
  69. PRESUBMIT_test_mocks.py
  70. README.md
  71. 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.

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

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