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flutter/third_party/perfetto/refs/heads/stable
commit
df2b6e4be1b2f6f799e72e0210d5981af6506436
[log]
author
sashwinbalaji <sashwinbalaji@google.com>
Tue May 19 14:11:57 2026 +0100
committer
GitHub <noreply@github.com>
Tue May 19 14:11:57 2026 +0100
tree
4268df51b4bf0e3fe3a51c367014524dce191d97
parent
877553985565ab10fe20ea844891aacabd0f70c7 [diff]
parent
bbc0953771c7c7f7e040d67b3b0b9f3e0f72e389 [diff]
stable: cherry-pick for v55.3 (#5964)

- Cherry pick change log update
- Cherry pick proto descriptor relaxation
- Cherry pick gitignore
- Cherry pick all changes in ui/src/plugins/dev.perfetto.HeapProfile and
ui/src/plugins/com.android.HeapDumpExplorer since the last commit in
stable (#5641)

c14f6359e9 ui: Add initial page plumbing (#5869)
5dba463ad4 ui: Add bitmap metadata to the HeapDumpExplorer page (#5861)
b91e5ce379 ui: Control HeapDumpExplorer auto-opening via feature flag
(#5845)
212831ccaf ui: Keep timeline default for native profiles and perf
samples (#5843)
80b19a4841 ui: Stop auto-selecting heap-graph dumps on the timeline
(#5836)
53c4d475f4 ui: Rename HeapDumpExplorer CSS classes from ah- to pf-hde-
(#5830)
d5be6be6a8 ui: Prefix HeapDumpExplorer setting ID with com.android
(#5787)
b63d370819 ui: Default to Heapdump Explorer for traces with heap-graph
data (#5761)
e2b8a81392 ui: Show tooltips on the HeapDumpExplorer columns (#5757)
facb3b4026 ui: Embed flamegraph viewer in Heap Dump Explorer (#5731)
d4061d1507 ui: Extract FlamegraphPanel widget from QueryFlamegraph
(#5730)
4725cd793b ui: Encapsulate plugin state in HeapDumpExplorerSession
(#5679)
fde1f8d625 ui: add matching-slice action to selection flamegraph (#5667)

- To get this to work also cherry-pick be16f77f16 (#5659)
- It is a hard dependency of fde1f8d625 . The "Find matching slices"
action needs openDistributionTab and
sliceDistributionCellRenderers which are defined here.
tree: 4268df51b4bf0e3fe3a51c367014524dce191d97
  1. .github/
  2. bazel/
  3. build_overrides/
  4. buildtools/
  5. contrib/
  6. docs/
  7. examples/
  8. gn/
  9. include/
  10. infra/
  11. protos/
  12. python/
  13. sdk/
  14. src/
  15. test/
  16. third_party/
  17. tools/
  18. ui/
  19. CLAUDE.md ⇨ docs/AGENTS.md
  20. GEMINI.md ⇨ docs/AGENTS.md
  21. .bazelignore
  22. .bazelrc
  23. .bazelversion
  24. .clang-format
  25. .clang-tidy
  26. .git-blame-ignore-revs
  27. .gitallowed
  28. .gitattributes
  29. .gitignore
  30. .gn
  31. .style.yapf
  32. Android.bp
  33. Android.bp.extras
  34. BUILD
  35. BUILD.extras
  36. BUILD.gn
  37. CHANGELOG
  38. CONTRIBUTORS.txt
  39. DIR_METADATA
  40. heapprofd.rc
  41. LICENSE
  42. meson.build
  43. METADATA
  44. MODULE.bazel
  45. MODULE.bazel.lock
  46. MODULE_LICENSE_APACHE2
  47. OWNERS
  48. OWNERS.github
  49. perfetto.rc
  50. perfetto_flags.aconfig
  51. PerfettoIntegrationTests.xml
  52. persistent_cfg.pbtxt
  53. README.chromium
  54. README.md
  55. TEST_MAPPING
  56. traced_perf.rc
  57. WORKSPACE
README.md

Perfetto - System profiling, app tracing and trace analysis

Perfetto is an open-source suite of SDKs, daemons and tools which use tracing to help developers understand the behaviour of complex systems and root-cause functional and performance issues on client and embedded systems.

It is a production-grade tool that is the default tracing system for the Android operating system and the Chromium browser.

Core Components

Perfetto is not a single tool, but a collection of components that work together:

  • High-performance tracing daemons: For capturing tracing information from many processes on a single machine into a unified trace file.
  • Low-overhead tracing SDK: A C++17 library for direct userspace-to-userspace tracing of timings and state changes in your application.
  • Extensive OS-level probes: For capturing system-wide context on Android and Linux (e.g. scheduling states, CPU frequencies, memory profiling, callstack sampling).
  • Browser-based UI: A powerful, fully local UI for visualizing and exploring large, multi-GB traces on a timeline. It works in all major browsers, requires no installation, and can open traces from other tools.
  • SQL-based analysis library: A powerful engine that allows you to programmatically query traces using SQL to automate analysis and extract custom metrics.

Why Use Perfetto?

Perfetto was designed to be a versatile and powerful tracing system for a wide range of use cases.

  • For Android App & Platform Developers: Debug and root-cause functional and performance issues like slow startups, dropped frames (jank), animation glitches, low memory kills, and ANRs. Profile both Java/Kotlin and native C++ memory usage with heap dumps and profiles.
  • For C/C++ Developers (Linux, macOS, Windows): Use the Tracing SDK to instrument your application with custom trace points to understand its execution flow, find performance bottlenecks, and debug complex behavior. On Linux, you can also perform detailed CPU and native heap profiling.
  • For Linux Kernel & System Developers: Get deep insights into kernel behavior. Perfetto acts as an efficient userspace daemon for ftrace, allowing you to visualize scheduling, syscalls, interrupts, and custom kernel tracepoints on a timeline.
  • For Chromium Developers: Perfetto is the tracing backend for chrome://tracing. Use it to debug and root-cause issues in the browser, V8, and Blink.
  • For Performance Engineers & SREs: Analyze and visualize a wide range of profiling and tracing formats, not just Perfetto's. Use the powerful SQL interface to programmatically analyze traces from tools like Linux perf, macOS Instruments, Chrome JSON traces, and more.

Getting Started

We‘ve designed our documentation to guide you to the right information as quickly as possible, whether you’re a newcomer to performance analysis or an experienced developer.

  1. New to tracing? If you're unfamiliar with concepts like tracing and profiling, start here:

  2. Ready to dive in? Our “Getting Started” guide is the main entry point for all users. It will help you find the right tutorials and documentation for your specific needs:

  3. Want the full overview? For a comprehensive look at what Perfetto is, why it's useful, and who uses it, see our main documentation page:

Debian Distribution

For users interested in the Debian distribution of Perfetto, the official source of truth and packaging efforts are maintained at Debian Perfetto Salsa Repository

Community & Support

Have questions? Need help?

We follow Google's Open Source Community Guidelines.