38810 2010-05-09 00:16:27 -0700 Massive slow down with large CSS tables 2022-07-01 17:02:17 -0700 1 1 1 Unclassified WebKit CSS 528+ (Nightly build) Mac (Intel) OS X 10.6 RESOLVED FIXED http://downloads.syncbyte.com/table_test.html P2 Normal --- 1 r.trost webkit-unassigned bfulgham jchaffraix scheglov oldest_to_newest 222997 0 r.trost 2010-05-09 00:16:27 -0700 Large HTML tables with CSS styles massively slowing down the browser. I've created a test-case with 15.000 rows for better comparison. While Firefox and Opera stay very responsive, all WebKit based browsers become extremely sluggish and slow. Within a Web-App that makes heavy use of JavaScript, this becomes an issue with much smaller tables already. In the test-case, I've removed all other page elements, JavaScripts and other CSS styles, because it would almost stall the browser if I've left them in. This problem only shows up with CSS tables. 222998 1 55491 r.trost 2010-05-09 00:20:33 -0700 Created attachment 55491 Large Table with CSS (~2.1MB) Large tables with CSS causing massive performance decrease 458604 2 jchaffraix 2011-08-29 17:49:24 -0700 Removing "border-collapse: border" leads to better performance. This is caused by us not caching the border information. 458678 3 r.trost 2011-08-29 21:08:32 -0700 (In reply to comment #2) > Removing "border-collapse: border" leads to better performance. This is caused by us not caching the border information. Thanks! That's a solution I can work with! 463792 4 jchaffraix 2011-09-07 17:45:56 -0700 See bug 64546 for optimizing border-collapse performance. 1880298 5 bfulgham 2022-07-01 17:02:17 -0700 The test case is no longer available. Given that Bug 64546 resolved the border-collapse issue, which seemed to be the culprit, closing this as well. 55491 2010-05-09 00:20:33 -0700 2010-05-09 00:20:33 -0700 Large Table with CSS (~2.1MB) url.txt text/plain 45 r.trost aHR0cDovL2Rvd25sb2Fkcy5zeW5jYnl0ZS5jb20vdGFibGVfdGVzdC5odG1s