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google / WebFundamentals

Former git repo for WebFundamentals on developers.google.com
Apache License 2.0
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Note limitation of allocation timeline #5783

Open kaycebasques opened 6 years ago

kaycebasques commented 6 years ago

And. Allocation timeline has v heavy instrumentation. Every single allocation triggers a callstack collection. So. Yah it will slow a busy app down to a crawl. Whereas allocation profile won't because it's sampled and aggregate.

kaycebasques commented 6 years ago

well. performance skew shouldn't really matter when doing memory profiling. allocation instrumentation is better suited for recordings <10s. allocation sampling can be left on much longer.

kaycebasques commented 6 years ago

And apparently the names were recently changed (Chrome 66?)