[Webkit-unassigned] [Bug 164193] Implement requestIdleCallback

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=164193

Alexandre Dieulot <adieulot at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |adieulot at gmail.com

--- Comment #6 from Alexandre Dieulot <adieulot at gmail.com> ---
This has been available in both Chrome and Firefox for 4.5 years. This was listed in WebKit’s 2020 goals under the “Catchup” session. It’s weird for the browser most aggressively marketing its speed not to have that API.

I don’t have any numbers on how useful it is in the wild, but a Google engineer that went all-in with rAF got a two-third reduction in first input delay for the worst 1% of cases and 20% reduction for the worst 5% on a JS-light site in late 2018: https://philipwalton.com/articles/idle-until-urgent/#how-much-does-this-actually-improve-performance%3F

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