UNCONFIRMED Bug 54840
Poor performance on page with many animated GIFs 
https://bugs.webkit.org/show_bug.cgi?id=54840
Summary Poor performance on page with many animated GIFs
ianh
Reported 2011-02-20 17:51:10 PST
Try loading http://fourfour.typepad.com/fourfour/2011/02/judge-judy-gifs.html and scrolling down. The images animate slowly and the page stutters while scrolling. Firefox renders the page smoothly.
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Peter Kasting
Comment 1 2011-02-21 15:55:55 PST
Chrome 11/Win doesn't seem to do too badly here; once the images load, page scrolling perf is noticeably but not radically decreased. I imagine that the current work to move scrolling to the GPU will help that.
Mark Rowe (bdash)
Comment 2 2011-02-21 18:20:26 PST
One issue here is that builds of WebKit using ImageIO for image decoding had an ineffectual fix for bug 26455. That’s now fixed by bug 54919. I think leaving this bug to track any scrolling performance issues seems sensible.
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