[Bug 447239] New: slow scrolling in 64bit Firefox
https://bugzilla.novell.com/show_bug.cgi?id=447239 Summary: slow scrolling in 64bit Firefox Product: openSUSE 11.1 Version: Beta 5 Platform: x86-64 OS/Version: Other Status: NEW Severity: Major Priority: P5 - None Component: Firefox AssignedTo: bnc-team-mozilla@forge.provo.novell.com ReportedBy: jmatejek@novell.com QAContact: qa@suse.de Found By: --- There is a known bug in Gecko that causes scrolling to be somewhat slower on pages with fixed elements and noticeably slower when a page contains a fixed background. In those two cases, suse's firefox 3.0.3 from beta5 and 3.0.4 from the Mozilla repo are much slower than "normal" firefox. Especially when starting the scrolling there is a noticeable lag, after a second or so the speed picks up and gets as "fast" as it should be. This is especially a problem when you scroll by small steps. reproduced on two different intel x86_64 machines, different GPUs (intel and nvidia), with and without desktop effects. on the same configuration, 32bit firefox from mozilla.com is not affected by the problem, and 64bit firefox from ubuntu also behaves as it should (with or without desktop effects). -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=447239 User wolfgang@rosenauer.org added comment https://bugzilla.novell.com/show_bug.cgi?id=447239#c1 Wolfgang Rosenauer <wolfgang@rosenauer.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO Info Provider| |jmatejek@novell.com --- Comment #1 from Wolfgang Rosenauer <wolfgang@rosenauer.org> 2008-11-20 11:50:28 MST --- Hmm, never noticed but then again I never use the upstream firefox package. It's strange though since I don't expect much difference between Ubuntu's package and ours. Do you think that's "new" behaviour or was it around for a longer time and do you just report it now or is it actually an issue in 11.1 rather than 11.0 and before? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=447239 User jmatejek@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=447239#c2 Jan Matejek <jmatejek@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|Major |Normal Status|NEEDINFO |NEW Info Provider|jmatejek@novell.com | --- Comment #2 from Jan Matejek <jmatejek@novell.com> 2008-11-20 13:03:31 MST --- Well... i didn't use opensuse 11.0 on my main laptop, so i can't tell for sure. Also, my workstation is much faster than the laptop, and so the effect is only noticeable when you know what you're looking for. (ok, i admit that i was exaggerating - on the notebook it's "much slower", while on my workstation it's "slightly slower") A colleague complained that ff3 (which we have since 11.0 iirc) has problems with scrolling, and that brought me to play with it somewhat, because i know that scrolling in ubuntu isn't that bad even on older hardware. some findings: - it only appears when you have "smooth scrolling" turned on. (-> lowering severity) - the slowdown appears to be quite dependent on CPU speed (i can't tell for sure, because i have tested only on three machines so far, all Core2 Duo, one is 1.5GHz, one is 1.8 or something and one is 2GHz, and the problem was rather visible on the 1.5GHz machine, but quite negligible on the two faster machines) - still, with smooth scrolling, on the 1.5GHz machine, the ubuntu version appears to be comparable to the 32bit official version on suse, and noticeably faster than the 64bit suse version. it is possible that there is some kind of power saving in suse that's keeping the clock speed down. i will check that. but still, the difference between 32bit and 64bit is slightly disturbing. also, i'll do some testing on clean profiles, my main profile (shared between the three versions) has quite a bunch of extensions -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
https://bugzilla.novell.com/show_bug.cgi?id=447239 User jmatejek@novell.com added comment https://bugzilla.novell.com/show_bug.cgi?id=447239#c3 Jan Matejek <jmatejek@novell.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |DUPLICATE --- Comment #3 from Jan Matejek <jmatejek@novell.com> 2008-12-10 08:21:52 MST --- after more research, i think that this is a weird variant of bug 438266 - and all the effects i described are there just because i went looking for them. closing as duplicate, will reopen if proven otherwise. *** This bug has been marked as a duplicate of bug 438266 *** https://bugzilla.novell.com/show_bug.cgi?id=438266 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.
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