On Wed, 2009-04-29 at 15:04 -0500, Chris Adams wrote: > Once upon a time, Matthew Woehlke <mw_triad@xxxxxxxxxxxxxxxxxxxxx> said: > > Adam Jackson wrote: > > >On Wed, 2009-04-29 at 10:28 -0400, Adam Jackson wrote: > > >>Check out frame 0 [1]. The server is being asked to do a blit that's > > >>15000 pixels tall. Who knows why, it could easily be a bug in firefox, > > >>but it could also be something the web page really did ask for. > > > > > >I should note that this really is the web page's fault: > > > > > >http://www.wthitv.com/images/bg_module.png > > > > > >So that's pretty awesome. By which I mean, let's drink until we can't > > >feel feelings anymore. > > > > Indeed. Someone needs to go back to CSS school. > > > > (Anyone sent the webmaster a "your site hard-locks my computer" mail, > > yet? :-) ) > > Well, to be honest, nothing a silly webmaster does should lock the > computer. Firefox should probably be smarter about this. Ennh. Firefox doesn't have any way of knowing what the acceleration size limit is for a given driver. It could chunk up pixmaps into 2k blocks, which is nice and conservative, but getting rendering correct once you do that is entirely non-trivial. Easy for blits, very hard for blends and transformations. There's a project to handle this transparently in the X server. It doesn't work yet, but I gave a talk about it at LCA this year: http://mirror.linux.org.au/pub/linux.conf.au/2009/Friday/76.ogg and I've got a Summer of Code student looking at it this summer, so, maybe someday we'll have a real window system. Also, just to be pedantic, it's not a lockup, just really really slow, and much slower than it needs to be because of a kernel bug. Should be able to get it to be merely a performance hiccup by F11. - ajax
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