21938 2008-10-28 15:59:59 -0700 suboptimal scrolling performance in gmail (firefox3 is much faster) 2008-11-21 15:46:35 -0800 1 1 1 Unclassified WebKit Layout and Rendering 528+ (Nightly build) All All NEW P2 Normal --- 1 fishd webkit-unassigned hyatt koivisto oldest_to_newest 96930 0 fishd 2008-10-28 15:59:59 -0700 suboptimal scrolling performance in gmail (firefox3 is much faster) firefox3 scrolling performance degrades to match webkit levels when a chat window is showing. the chat window in gmail is rendered using a fixed position element, so it would appear that firefox3 is discovering that it should not optimize the scrolling due to the presence of a fixed position element. webkit would suffer from bug 5909 on gmail (when a chat window is exposed) except for the fact that the frame being scrolled has a transparent background. the parent to the frame has a solid white background, so the net result is a white background. i suspect that firefox3 notices this and then determines that it is safe to do optimized scrolling. webkit should do the same. i still need to confirm this theory ;-) 99719 1 jon 2008-11-21 15:46:35 -0800 Reported against Chromium, see http://code.google.com/p/chromium/issues/detail?id=104