[Webkit-unassigned] [Bug 65734] Timer scheduling leads to poor framerate and responsiveness on timer-heavy pages

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Aug 4 17:08:18 PDT 2011


--- Comment #1 from James Robinson <jamesr at chromium.org>  2011-08-04 17:08:17 PST ---
Created an attachment (id=103007)
 --> (https://bugs.webkit.org/attachment.cgi?id=103007&action=review)
Test case

This test case intentionally floods the browser with far too many timers while attempting to animate a blue box. The box animation is driven by requestAnimationFrame, so it only moves in chromium or Firefox.  In Safari try interacting with the text area and notice how crappy it is.   The framerate on this test page with ToT WebKit is below 20fps (around 17fps on my box, it depends on the exact timer scheduling) even though the animation logic itself is quite cheap.

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