Contact emails
[email protected]<mailto:[email protected]>, 
[email protected]<mailto:[email protected]>, 
[email protected]<mailto:[email protected]>

Explainer
https://github.com/WICG/js-self-profiling/blob/main/markers.md

Specification
No specification available yet for this extension

Summary

Adds information about what type of non javascript work is being done by the 
user agent to samples from the JS Self-Profiling API.


Blink component
Blink>PerformanceAPIs<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EPerformanceAPIs>

Motivation

Non javascript execution is hard to identify in traces captured with JS 
Self-Profiling API: From a trace we cannot differentiate idle activity from top 
level UA activity, so for example code that triggers asynchronous rendering 
work cannot be measured properly. Long traces may include Garbage Collection 
activity which cannot be differentiated with javascript execution and adds to 
the noise on the collected trace.


Initial public proposal
https://github.com/WICG/js-self-profiling/issues/26

Search tags
profiler<https://www.chromestatus.com/features#tags:profiler>, 
profiling<https://www.chromestatus.com/features#tags:profiling>, 
js<https://www.chromestatus.com/features#tags:js>

TAG review
https://github.com/w3ctag/design-reviews/issues/682
[https://opengraph.githubassets.com/f0cf3a9d82cf5e74f03d1f32abf47621dcd64a4d6ec6914bea9c9a388bc9d897/w3ctag/design-reviews/issues/682]<https://github.com/w3ctag/design-reviews/issues/682>
State extension for JS Self-Profiling API. · Issue #682 · 
w3ctag/design-reviews<https://github.com/w3ctag/design-reviews/issues/682>
Braw mornin&#39; TAG! I&#39;m requesting a TAG review of State extension for JS 
Self-Profiling API. Non javascript execution is hard to identify in traces 
captured with JS Self-Profiling API: From ...
github.com


TAG review status
Pending

Risks


Interoperability and Compatibility


Gecko: No signal

WebKit: No signal

Web developers: No signals


Debuggability


Is this feature fully tested by 
web-platform-tests<https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md>?
No

Flag name


Requires code in //chrome?
False

Estimated milestones

No milestones specified


Link to entry on the Chrome Platform Status
https://www.chromestatus.com/feature/5676352050036736

This intent message was generated by Chrome Platform 
Status<https://www.chromestatus.com/>.

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