105362 2012-12-18 16:22:46 -0800 CSS Regions slow 2013-05-23 15:24:20 -0700 1 1 1 Unclassified WebKit Web Inspector (Deprecated) 528+ (Nightly build) All All RESOLVED FIXED P2 Normal --- 57312 0 johanneswilm webkit-unassigned apavlov keishi loislo mibalan pfeldman pmuellr vsevik web-inspector-bugs WebkitBugTracker yurys oldest_to_newest 794149 0 johanneswilm 2012-12-18 16:22:46 -0800 When many regions are used on the same same page, they are slowing the page down considerably. Check http://sourcefabric.github.com/BookJS/test.html for a simple demo. Check http://sourcefabric.github.com/BookJS/test2.html for a demo of lots of flows. Check http://sourcefabric.github.com/BookJS/test3.html for a demo of long flows. 890297 1 mibalan 2013-05-17 05:12:44 -0700 Could you please retest this with a newer Chromium? There's been some performance patches that landed in WebKit/Blink in this area. 893059 2 johanneswilm 2013-05-23 15:24:20 -0700 This seems to have been resolved with recent improvements