trace_processor: make utid lookup in sched table fast

We almost always want to join sched with the thread table to get more
information about the slice. This CL adds a index for the utid column
to allow efficient lookups of utid in the sched table.

For example for the example trace the following query:
select sum(dur) from sched join thread using(utid) where upid = 15;

Old code: 30ms
New code 0.3ms

This sort of query is used by the UI to do summarization of the time
scheduled for each process.

Change-Id: I51a655ff1af7bdbdbe6f79eadcb9fa2896e70a4d
6 files changed
tree: a4ea244c17988eb733a4b9d0be601136ab0dc59d
  1. build_overrides/
  2. buildtools/
  3. debian/
  4. docs/
  5. gn/
  6. include/
  7. infra/
  8. protos/
  9. src/
  10. test/
  11. tools/
  12. ui/
  13. .clang-format
  14. .gitignore
  15. .gn
  16. .travis.yml
  17. Android.bp
  18. Android.bp.extras
  19. BUILD.gn
  20. codereview.settings
  21. heapprofd.rc
  22. MODULE_LICENSE_APACHE2
  23. NOTICE
  24. OWNERS
  25. perfetto.rc
  26. PRESUBMIT.py
  27. README.chromium
  28. README.md
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.

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.