Given some of our (Chromium-team) recent investigation into the contents of unload handlers, I'm not sure how much this move will help users, even if you don't revert it. Lots of unload handlers busy-wait while doing async XHR in order to try to guarantee delivery of tracking pings. Authors will probably elect to copy this code to the pagehide handler rather than moving it, and the experience for users is still going to be extremely sluggish navigation out of these pages.
While it's great that you've made improvements for unload handlers (or maybe not-so-great, since you made them only in v8), this seems like a non-sequitor to a discussion of the back-forward cache.
Prior to r48388, things that could make the back button slow: 1. An unload handler in the page you're leaving. 2. Reloading the page you're going back to. Post r48388, things that could make the back button slow: 1. An unload handler in the page you're leaving. Geoff _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
