27505 2009-07-21 09:28:50 -0700 Use or large box-shadow radius causes lag and performance issues 2010-08-21 13:29:01 -0700 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) All OS X 10.5 RESOLVED DUPLICATE 22102 P1 Major --- 0 joshbryant webkit-unassigned bruce keishi paulirish ploum simon.fraser oldest_to_newest 133487 0 joshbryant 2009-07-21 09:28:50 -0700 When using a large radius on a box-shadow, on both Mac and PC, Safari 4 causes a massive CPU takeover in which just having it on screen can use up to 40% CPU and trying to do anything (hover over a link, type text in a text field, etc...) will spike the CPU to 100%. It also makes the entire page pretty much unusable due to the lag. I've done a test case here: http://tinycrumb.org/boxshadowcpu.html 133489 1 33183 joshbryant 2009-07-21 09:36:52 -0700 Created attachment 33183 Test Case 219762 2 bruce 2010-05-01 17:10:53 -0700 I can confirm this. http://identi.ca/ is very difficult to use, and scrolls very slowly. Offending item in CSS is "-webkit-box-shadow: rgba(194, 194, 194, 0.296875) 5px 7px 7px;". 256713 3 simon.fraser 2010-07-27 11:19:05 -0700 Probably dup. 267595 4 paulirish 2010-08-21 12:58:34 -0700 probably a dupe of issue 22102 267598 5 simon.fraser 2010-08-21 13:29:01 -0700 *** This bug has been marked as a duplicate of bug 22102 *** 33183 2009-07-21 09:36:52 -0700 2009-07-21 09:36:52 -0700 Test Case url.txt text/plain 38 joshbryant aHR0cDovL3RpbnljcnVtYi5vcmcvYm94c2hhZG93Y3B1Lmh0bWw=