[webkit-dev] Request for position on scheduler.postTask

Scott Haseley shaseley at chromium.org
Wed Jun 23 14:50:38 PDT 2021

Hello WebKit-dev,

I’d like to request WebKit’s official position on scheduler.postTask(), an
API for scheduling and controlling prioritized tasks. It is specified in
[1] and further described in [2]. We’ve presented the API a few times to
the WebPerf WG. One concern raised there by rniwa was the risk of priority
inversions, which we’ve explored in [3].

We recently finished running an Origin Trial in Chrome. Airbnb, who we’ve
been working closely with, experimented with using the API to improve their
site’s performance, which they wrote about recently [4].

[1] Spec: https://wicg.github.io/scheduling-apis/
[2] Explainer:
[3] Priority inversion exploration:
[4] Airbnb blog post:

Additional Links:
 - Preliminary TAG review:
 - TAG Spec review (under review):
 - Chrome Status entry:

Thank you,
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