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flutter / third_party / perfetto / 7a74735e5c71e869cbaa2ef9c046ee9c59eb67d9
commit7a74735e5c71e869cbaa2ef9c046ee9c59eb67d9[log] [tgz]
authorRyan Savitski <rsavitski@google.com>Tue Feb 11 14:54:29 2020 +0000
committerRyan Savitski <rsavitski@google.com>Tue Feb 11 14:54:29 2020 +0000
tree7dfcdc0606549a77ec9e7e4c495d5ad0ab7f72a6
parente054e8e72d379df2e18efda1126734aa160e5044 [diff]
traced_perf: all cpus, configurable sampling rate, kernelspace samples

As far as I understand, exclude_kernel == false means:
* user process samples are kept even if they happen while the
  thread was in kernelspace (most likely a syscall).
* kernel thread samples are kept.

Other noteworthy points:
* trace packet now records whether the sampled process was in
  kernel/userspace at the time of sampling (unwinding starts
  from the user stack, as before).
* skipping throttle/unthrottle records (previously hit a CHECK).
* fixed wrong assumption on how kernel thread samples filled the "user
  registers" portion (it's just one u64 abi == 0).

Bug: 144281346
Change-Id: I4daa1a85fc4d5af38458048cd279836b58e2a466
11 files changed
tree: 7dfcdc0606549a77ec9e7e4c495d5ad0ab7f72a6
  1. bazel/
  2. build_overrides/
  3. buildtools/
  4. debian/
  5. docs/
  6. gn/
  7. include/
  8. infra/
  9. protos/
  10. src/
  11. test/
  12. tools/
  13. ui/
  14. .clang-format
  15. .gitignore
  16. .gn
  17. .style.yapf
  18. Android.bp
  19. Android.bp.extras
  20. BUILD
  21. BUILD.extras
  22. BUILD.gn
  23. codereview.settings
  24. heapprofd.rc
  25. LICENSE
  26. MODULE_LICENSE_APACHE2
  27. NOTICE
  28. OWNERS
  29. perfetto.rc
  30. PRESUBMIT.py
  31. README.chromium
  32. README.md
  33. TEST_MAPPING
  34. WORKSPACE
README.md

Perfetto - Performance instrumentation and tracing

Perfetto is an open-source project for performance instrumentation and tracing of Linux/Android/Chrome platforms and user-space apps.

See www.perfetto.dev for docs.

Contributing

See /docs/contributing.md for instructions.

The source-of-truth repo is Android's Gerrit. The GitHub repo is a read-only mirror.

Bugs

  • For bugs affecting Android or the tracing internals use the internal bug tracker (go/perfetto-bugs).
  • For bugs affecting Chrome use http://crbug.com, Component:Speed>Tracing label:Perfetto.

Community

You can reach us on our Discord channel. If you prefer using IRC we have an experimental Discord <> IRC bridge synced with #perfetto-dev on Freenode.