Previously, we always dispatched PerformanceEntries to PerformanceObservers via a simple PostTask. We propose to switch to dispatching these entries during idle times, or 100ms after they’ve been queued, whichever comes first. The spec encourages this new behavior: “The performance timeline task queue is a low priority queue that, if possible, should be processed by the user agent during idle periods to minimize impact of performance monitoring code.”




Specification link

Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium


No active development (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • No signal
  • No signals


Last updated on 2020-12-04