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].