CR: Cooperative Scheduling of Background Tasks

Cooperative Scheduling of Background Tasks

https://www.w3.org/TR/2017/CR-requestidlecallback-20170131/

feedback due by: 2017-02-21

Abstract


This document defines an API that web page authors can use to cooperatively schedule background tasks such that they do not introduce delays to other high priority tasks that share the same event loop, such as input processing, animations and frame compositing. The user agent is in a better position to determine when background tasks can be run without introducing user-perceptible delays or jank in animations and input response, based on its knowledge of currently scheduled tasks, vsync deadlines, user-interaction and so on. Using this API should therefore result in more appropriate scheduling of background tasks during times when the browser would otherwise be idle.

Status of the Document


This section describes the status of this document at the time of its publication. Other documents may supersede this document. A list of current W3C publications and the latest revision of this technical report can be found in the W3C technical reports index at https://www.w3.org/TR/.

The Web Performance Working Group maintains a test suite and an implementation report for the specification. Vendors interested in implementing this document SHOULD join the mailing lists below and take part in the discussions.

This document was published by the Web Performance Working Group as a Candidate Recommendation. This document is intended to become a W3C Recommendation. If you wish to make comments regarding this document, please send them to public-web-perf@w3.org (subscribe, archives) with [RequestIdleCallback] at the start of your email's subject. W3C publishes a Candidate Recommendation to indicate that the document is believed to be stable and to encourage implementation by the developer community. This Candidate Recommendation is expected to advance to Proposed Recommendation no earlier than 21 February 2017. All comments are welcome.

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This document is governed by the 1 September 2015 W3C Process Document.