Public bug reported:
Binary package hint: gnome-system-monitor
Step to reproduce:
1. click on the System Monitor, notice that a window with CPU usage charts
opens up
2. the CPU usage quickly grows. On 4 CPU machine is raises from a few percents
to about 50% in about a minute and then stays on that level. The CPU usage is
caused by Gnome System Monitor. It also seems to be proportional to the amount
of space occupied by the chart (the part with lines), which may point to
inefficiencies in plotting the chart.
3. closing down the window with chart returns the CPU consumption back to
normal (1-2 percents) but minimizing the windows does not change anything.
Screenshot is attached.
Why this is a problem:
This application is supposed to provide information on CPU usage by other
applications. The fact that it uses such vast amounts of CPU power itself
completely skews the picture and makes the measurements useless: instead of
seeing what applications are doing one can only see that the computer's CPU is
overloaded by the monitoring. It is not just bad. It is worse than that. :-(
Expected behaviour:
CPU usage of the application must be negligible. The problem of drawing a few
lines was never a big deal even on 20MHz machines.
Description: Ubuntu 10.10
Release: 10.10
Installed: 2.28.1-1ubuntu1
Candidate: 2.28.1-1ubuntu1
Version table:
*** 2.28.1-1ubuntu1 0
500 http://gb.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: gnome-system-monitor 2.28.1-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8
Uname: Linux 2.6.35-24-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Jan 21 20:22:25 2011
ExecutablePath: /usr/bin/gnome-system-monitor
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
LANG=en_GB.utf8
SHELL=/bin/bash
SourcePackage: gnome-system-monitor
** Affects: gnome-system-monitor (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug maverick
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https://bugs.launchpad.net/bugs/706073
Title:
Exeptionally high CPU consumption
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