Public bug reported:
Binary package hint: firefox-3.0
Since the past two weeks or so, Firefox consumes a LOT of CPU (upwards
of 50-60% on both CPUs on a dual core machine) when visiting Facebook. I
haven't experienced this problem on any other website, but it is highly
likely that this is not something unique to Facebook. I'm not sure
exactly what the problem is -- whether it is some Javascript or Flash or
what. Even when I am on an empty page (no applications etc), the CPU
usage still remains high.
On doing a top, I see that the CPU is actually being consumed by the X
process and not just by Firefox. But it is certainly driven by Firefox
since closing the Facebook tab fixes the problem. I'm seeing X consuming
around 45% CPU and Firefox another 20% consistently.
I tried doing an strace and it was largely filled with gettimeofday()
calls. I can attach a detailed log if required, but I couldn't
immediately see anything relevant in the strace output.
ProblemType: Bug
Architecture: i386
Date: Thu Jul 24 21:45:32 2008
DistroRelease: Ubuntu 8.04
NonfreeKernelModules: nvidia fglrx
Package: firefox-3.0 3.0.1+build1+nobinonly-0ubuntu0.8.04.2
PackageArchitecture: i386
ProcEnviron:
SHELL=/bin/bash
PATH=.:/home/username/local/bin:/usr/bin:/home/username/software/forrest//bin:/home/username/software/utils/:/home/username/.kde/bin:/usr/games/:/usr/local/kde/bin:/sbin:/usr/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/lib/gems/1.8/bin/
LANG=en_US.UTF-8
SourcePackage: firefox-3.0
Uname: Linux 2.6.24-20-generic i686
** Affects: firefox-3.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug
--
High CPU usage while visiting Facebook
https://bugs.launchpad.net/bugs/251700
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