[dapper] Memory and CPU usage
adavid at adavid.com.au
Tue Jan 31 06:26:12 UTC 2006
On Tue, Jan 31, 2006 at 04:20:41PM +1100, Sasha Tsykin wrote:
> I've checked both ksysguard and the gnome system monitor. When running
> side by side, they give different results. They show the same
> application using radically different amounts of memory (eg.
> gnome-system monitor shows mozilla-thunderbird-bin using 62.7MiB but
> ksysguard shows it using ~265MiB). Also, ksysguard which is the only one
> of the two which reports CPU utilization reports almost all my
> applications using 0% of my CPU. These glitches are bizarre and it's
> quite important for me to know how my system is performing in
> quantitative terms, which is impossible because of the glitches outlined
> above. The only time they agree is when some application starts to go
> rogue and use 100% of my CPU for no apparent reason. Even then they
> don't agree on the amount of memory it is using, and the CPU utilization
> ranges from 5% to 10% in ksysguard. I know that application is causing
> the problem because the moment I kill it the problem goes away. This is
> a major issue. I would like to know which one I should trust (if either)
> and if possible, how to fix the problem.
I haven't used either of these tools, but they may be reporting different
memory figures (working set size vs total virtual memory used). Try using
the top command in a shell. That clearly by default breaks up the memory used
and should show you what mozilla-thinderbird-bin is using.
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