Public bug reported:
Binary package hint: gnome-system-monitor
Running Hardy with gnome-system-monitor 2.21.5-0ubuntu1, linux kernel
2.6.24-5-generic.
There is something about the new graphs in the system monitor that cause
it to use an extraordinary amount of processing power when viewed.
Opening the program itself does not cause any ill effects, and the
System, Processes, and File Systems tabs all work fine. However, as
soon as I switch to the Resources tab my processor usage shoots up to
100%. I can confirm that it is in fact using that much, and not merely
misreporting, as a) I have the system monitor panel applet running as
well, and b) system responsiveness grinds to a near-halt. Switching
back to one of the other three tabs makes everything normal again.
I have been using a graph refresh rate of 1/1.75s. Using 1/4.00s CPU
usage drops to 50-55%. Increasing the interval to 60.00s brings it down
to an almost reasonable 10%. The shortest interval that will
consistently give 100% is 2.00s.
My hardware consists of a 1.86 GHz Pentium M processor and 1024 MB RAM
with and ATI Radeon Mobility X300 video card.
I have attached a screenshot of the graphs, showing the result of
alternating between the Resources tab and the others (as it still graphs
in the background as long as the app is open). Note that actually
calculating the graphs doesn't seem to be a problem, but only if you are
actually looking at them.
I see that there are a number of performance-related bugs filed against
g-s-m, but after looking through them it does not seem to me that any of
them are the same set of conditions and symptoms, so I think this is a
new bug, but am not 100% sure.
** Affects: gnome-system-monitor (Ubuntu)
Importance: Undecided
Status: New
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[hardy] Resources tab of g-s-m uses 100% CPU
https://bugs.launchpad.net/bugs/190120
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