Todo / Roadmap

[lahmatiy]

Input formats

• [x] Chromium Performance Profile
  • [ ] Extract additional events like compute styles, layout, compile code etc
• [x] Edge Enhanced Performance Traces (.devtools)
• [x] V8 log preprocessed with --preprocess
  • [ ] Scripts
  • [ ] Function state transitions
• [ ] Raw V8 log
• [ ] ~Support for Firefox/Safari profiles~ Postponed until done with V8

Integrations

• [ ] Integration with playwright (using context.tracing?)
• [ ] Integration with puppeteer (using page.tracing?)
• [ ] Viewer as PWA
• [ ] File Handling

API

• [ ] Marks (smth like performance.mark() / performance.measure())
• [ ] setSamplingInterval
• [ ] cpupro -- script.js ...params as an alternative to node --require cpupro script.js ...params

Data (capturing & processing)

• [x] Fix total time computation
• [x] Bring file:///path/... and /path/... to one form
• [ ] Exclude startProfiling/stopProfiling frames from the profile
• [x] Attach RegExp location to a parent call frame
• [ ] ~Populate collected profile with code fragments~ This data can be obtained from V8 log

Viewer

• [ ] Switch between threads (for Chromium timeline profiles with multiple threads)
• [ ] Marks on timelines
• [ ] Flow view
• [ ] Tree with columns view
• [ ] Keyboard navigation in trees / tables
• [x] Flame charts
• [x] Example data
• [ ] Instructions how to capture profile file

[cmdcolin]

great work on this! can the app display webworker traces also? just an idea

[lahmatiy]

@cmdcolin I'm going to add a switching between threads for Chromium timeline profiles (added a point to "viewer" about it), since a webworker is a thread and timeline contains a separate profile for each of them. However, that's a complex task and I can't currently say for sure about ETA of this feature.

[eJayYoung]

will it support heap profile or gc trace as well，I really like this kind of rethink about XXX profile analysis