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flutter / third_party / perfetto / 5045687984fb3e60bbbb3a2ff7a910066b9ec723
commit5045687984fb3e60bbbb3a2ff7a910066b9ec723[log] [tgz]
authorLalit Maganti <lalitm@google.com>Fri Apr 26 00:47:08 2024 +0100
committerLalit Maganti <lalitm@google.com>Fri Apr 26 00:47:08 2024 +0100
tree6309c40933b8e27199121d283a484aadbb4b336a
parent167a19d8463f5ab36e21bb7c6ee840842efc7a8e [diff]
ui: utilise segment forest to improve counter tracks on large traces

This CL introduces the use of the segment forest to significantly speed
up the queries of counter tracks on large traces. Specifically the data
structure is exposed to Typescript via the use of a new "CounterMipmap"
trace processor operator.

Also while I'm here, fix a few subtle issues I found in the rendering
of counter tracks:
1) Don't draw things deep in negative x: this can cause disappearing
   tracks when very very zoomed in
2) Improve perf of counter panels query.
3) Fix some subtle overlap between counter units and the hover line:
   this is pixel peeping but still nice to fix. Specifically, on my
   monitor, I saw the bottom 3/4 pixels overlapping with the top of the
   counter line when the counter was at its maximum.

Change-Id: I603faaccd080f5e5ff07c37462a039e6850803ea
8 files changed
tree: 6309c40933b8e27199121d283a484aadbb4b336a
  1. .github/
  2. bazel/
  3. build_overrides/
  4. buildtools/
  5. debian/
  6. docs/
  7. examples/
  8. gn/
  9. include/
  10. infra/
  11. protos/
  12. python/
  13. src/
  14. test/
  15. third_party/
  16. tools/
  17. ui/
  18. .clang-format
  19. .clang-tidy
  20. .git-blame-ignore-revs
  21. .gitattributes
  22. .gitignore
  23. .gn
  24. .style.yapf
  25. Android.bp
  26. Android.bp.extras
  27. BUILD
  28. BUILD.extras
  29. BUILD.gn
  30. CHANGELOG
  31. codereview.settings
  32. DIR_METADATA
  33. heapprofd.rc
  34. LICENSE
  35. meson.build
  36. METADATA
  37. MODULE_LICENSE_APACHE2
  38. OWNERS
  39. perfetto.rc
  40. PerfettoIntegrationTests.xml
  41. persistent_cfg.pbtxt
  42. PRESUBMIT.py
  43. README.chromium
  44. README.md
  45. TEST_MAPPING
  46. traced_perf.rc
  47. WATCHLISTS
  48. WORKSPACE
README.md

Perfetto - System profiling, app tracing and trace analysis

Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.

See https://perfetto.dev/docs or the /docs/ directory for documentation.