RESOLVED DUPLICATE of bug 22280 21589
High cpu load and slow GIF animation rendering 
https://bugs.webkit.org/show_bug.cgi?id=21589
Summary High cpu load and slow GIF animation rendering
Vilen Tambovtsev
Reported 2008-10-14 10:45:50 PDT
Webkit r37469. Here is the image: http://cache.boston.com/universal/site_graphics/blogs/bigpicture/sol_10_13/sol09.gif When I try to open this image in Webkit I'm suffering real high cpu load(50-70%) and slow animation at the same time. If I crawl a web page with some more animations Webkit stops responding at all, for instance this page http://habrahabr.ru/blogs/kosmos/42350/
Attachments
Add attachment proposed patch, testcase, etc.
Vilen Tambovtsev
Comment 1 2008-10-14 10:48:17 PDT
Same image is rendered smoothly in Firefox, and CPU load is 7-10%
Jussi Hagman
Comment 2 2009-02-02 05:23:48 PST
Loooks like #22280.
Douglas
Comment 3 2009-03-05 11:08:27 PST
That's right. GIF animation plays very smooth in Firefox and in QuickTime, but in WebKit-Safari it: 1) hangs browser (10-30 seconds showing rainbow cursor), 2) in beginning of animation, plays almost every frame, but then plays every 5-10th frame only and evenually shows rainbow cursor again. Power Mac G4 800; OS X 10.4.11; WebKit nightly build (March 4)
Vilen Tambovtsev
Comment 4 2009-07-09 14:41:33 PDT
The page to prove the bug http://tambovtsev.info/webkit-bug.html
Peter Kasting
Comment 5 2009-09-14 13:56:41 PDT
*** This bug has been marked as a duplicate of bug 22280 ***
Note You need to log in before you can comment on or make changes to this bug.