top-idle.log 2009/5/2 Stefano Doni <[email protected]>
> Here's some hard performance data. > > I've measured Xorg and firefox CPU consumption in two scenarios: > > 1) System completely idle > 2) Firefox open on gmail, only 1 tab, no firefox extensions, scrolling down > this launchpad thread fully expaned with mouse wheel. > > In both cases I've recorded CPU utilization, 10 top recordings every 5 > seconds each of the two processes. Command line: > > top -b -n 10 -d 5 -p $(pidof firefox),$(pidof X) > > I'm attaching the two top logs. Two noteworthy things to point out: > > 1) CPU fully saturated (constantly 100%) when scrolling in gmail! > 2) Process responsible for this is Xorg! > > See the attached logs. One important thing: I'm using nouveau now in > Jaunty. Later I'll redo the recordings with nv and possibily NVIDIA closed > drivers. I don't think it is a matter of driver though, I've opened this > slowness bug when I was using Intrepid with nv and the situation was the > same. > > Now, next step could be to profile the driver and see where the time is > spent. Anyone willing to dive into this with me? I'm willing to profile this > workload, if someone can guide me. > > 2009/5/1 phinn <[email protected]> > > Because it's not entirely an Nvidia bug either. My IBM T60 laptop draws >> Firefox pages perfectly smooth with crappy ATI X1400 card compared to my >> high end PC, its ridiculous. However, If you try Opera or Webkit based >> browsers in Linux this problem does not occur. It is only between >> Firefox + Nvidia. >> >> Yea, there should be some kind of bug report filled with Nvidia for sure >> though. As both Firefox and them are to blame. >> >> -- >> Slow performance with Gmail >> https://bugs.launchpad.net/bugs/217580 >> You received this bug notification because you are a direct subscriber >> of the bug. >> >> Status in XUL + XPCOM application runner: Confirmed >> Status in “firefox-3.0” source package in Ubuntu: Invalid >> Status in “xulrunner-1.9” source package in Ubuntu: Fix Committed >> >> Bug description: >> Binary package hint: firefox-3.0 >> >> When scrolling in Gmail (and other websites however its not as noticable) >> the scrolling performance is terrible. There is a slight lag from when it >> starts to scroll to when it actually does scroll. On my Windows XP machine >> it is MUCH faster (basically instant). This is present with both Compiz >> enabled and disabled. >> >> ProblemType: Bug >> Architecture: i386 >> Date: Tue Apr 15 01:01:46 2008 >> DistroRelease: Ubuntu 8.04 >> NonfreeKernelModules: nvidia >> Package: firefox-3.0 3.0~b5+nobinonly-0ubuntu1 >> PackageArchitecture: i386 >> ProcEnviron: >> >> PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games >> LANG=en_US.UTF-8 >> SHELL=/bin/bash >> SourcePackage: firefox-3.0 >> Uname: Linux 2.6.24-16-generic i686 >> > > ** Attachment added: "top-idle.log" http://launchpadlibrarian.net/26246788/top-idle.log -- Slow performance with Gmail https://bugs.launchpad.net/bugs/217580 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
