On Friday, May 30, 2014 8:22:25 AM UTC+3, Matt Woodrow wrote: > Thanks Avi! > > > > I can reproduce a regression like this (~100% slower on > > iconFade-close-DPIcurrent.all) with my machine forced to use the intel > > GPU, but not with the Nvidia one.
Indeed, and it's not the first time we notice that Firefox performs much worse with Intel iGPUs compared to nvidia. This comment: https://bugzilla.mozilla.org/show_bug.cgi?id=894128#c30 compares scrolling performance on a Wikipedia page, on a different system than the one I used to produce these OMTC numbers with. It suggests that we were already doing badly enough with intel iGPUs even before OMTC (about 300% worse and much more noisy intervals than nvidia on a Wikipedia page if we're to believe those numbers), and it looks as if with OMTC the regression compared to nvidia increased even more (in relative terms). In comment 1 of the same bug 894128, I also compared the performance of Chrome and IE on the same pages. FWIW, IE is able to maintain 100% smooth scrolling on some really complex pages even on a _very_ low end Atom system (Intel iGPU), while Firefox doesn't come anywhere near it. While scroll and tab animations are possibly different things, I do think there's a line which connects these dots, and it's that for whatever reason, Firefox does really badly on Intel iGPUs. Which is unfortunate, because on many many systems these are the only available GPUs, and they're already considered good enough for the majority of users to not need a dedicated GPU. - avih _______________________________________________ dev-platform mailing list [email protected] https://lists.mozilla.org/listinfo/dev-platform
