178163 2017-10-11 03:48:28 -0700 WebAssembly: structured cloning in IndexedDb for startup performance 2017-10-11 09:02:11 -0700 1 1 1 Unclassified WebKit New Bugs Safari 11 All All RESOLVED DUPLICATE 166481 P2 Major --- 1 gauravdewan007 webkit-unassigned jfbastien oldest_to_newest 1359106 0 gauravdewan007 2017-10-11 03:48:28 -0700 (1) Open webpage with WebAssembly in Webworker which tries to store and load webassembly in indexeddb after feature testing (2) Safari 11 on ios and Mac OS does not support serialization of machine code to indexeddb or load from that indexeddb in WebWorker Result: Startup on second launch on Safari is much slower as compared to Firefox (or chrome canary). On first launch, Safari is relatively faster but owing to indexeddb support, Firefox (and other browsers) look much faster on second launch Expected: Safari should be fastest browser in second launch of webpage. 1359204 1 jfbastien 2017-10-11 09:02:11 -0700 *** This bug has been marked as a duplicate of bug 166481 ***