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chromium / chromium / src.git / a5d9a9d75a9a8f7f6fb9d749c9b797eb2550d34e
commita5d9a9d75a9a8f7f6fb9d749c9b797eb2550d34e[log] [tgz]
authorBruce Dawson <brucedawson@chromium.org>Thu Jul 12 16:15:25 2018
committerCommit Bot <commit-bot@chromium.org>Thu Jul 12 16:15:25 2018
tree4ebeec94c80f52717d2c838448049b1729424a84
parentf448a241361b03dd2b6fd21ab052774e1074fdf1 [diff]
Add "latency" to list of ETW-traceable events

The "latency" category looks like a perfect event category for ETW
tracing. In particular, TabSwitching::Latency indicates when Chrome
thinks that tab switching has started and stopped which allows it to be
profiled in detail. This has revealed where CPU time is going, and how
long the delay is from when the keyboard event is generated to when
Chrome starts officially processing it. This was helpful in
investigating tab switching latency in bug 858944.

This will require an update to UIforETW to fully enable, which I have
done locally for testing purposes.

Bug: 858944
Change-Id: I4797b804ea6d35458aa3b4e876a78172a29d5131
Reviewed-on: https://chromium-review.googlesource.com/1134516
Reviewed-by: Primiano Tucci <primiano@chromium.org>
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574586}
1 file changed
tree: 4ebeec94c80f52717d2c838448049b1729424a84
  1. android_webview/
  2. apps/
  3. ash/
  4. base/
  5. blink/
  6. build/
  7. build_overrides/
  8. cc/
  9. chrome/
  10. chrome_elf/
  11. chromecast/
  12. chromeos/
  13. cloud_print/
  14. components/
  15. content/
  16. courgette/
  17. crypto/
  18. dbus/
  19. device/
  20. docs/
  21. extensions/
  22. gin/
  23. google_apis/
  24. google_update/
  25. gpu/
  26. headless/
  27. infra/
  28. ios/
  29. ipc/
  30. jingle/
  31. mash/
  32. media/
  33. mojo/
  34. native_client_sdk/
  35. net/
  36. pdf/
  37. ppapi/
  38. printing/
  39. remoting/
  40. rlz/
  41. sandbox/
  42. services/
  43. skia/
  44. sql/
  45. storage/
  46. styleguide/
  47. testing/
  48. third_party/
  49. tools/
  50. ui/
  51. url/
  52. webrunner/
  53. .clang-format
  54. .eslintrc.js
  55. .git-blame-ignore-revs
  56. .gitattributes
  57. .gitignore
  58. .gn
  59. .vpython
  60. AUTHORS
  61. BUILD.gn
  62. CODE_OF_CONDUCT.md
  63. codereview.settings
  64. DEPS
  65. ENG_REVIEW_OWNERS
  66. LICENSE
  67. LICENSE.chromium_os
  68. OWNERS
  69. PRESUBMIT.py
  70. PRESUBMIT_test.py
  71. PRESUBMIT_test_mocks.py
  72. README.md
  73. WATCHLISTS
README.md

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