KDE 4.3 X and plasma-desktop CUP usage
Anne Wilson
cannewilson at googlemail.com
Thu Sep 3 08:50:42 UTC 2009
On Wednesday 02 September 2009 20:09:43 Emmett Culley wrote:
> On 09/01/2009 10:24 AM, Emmett Culley wrote:
> > Since upgrading to KDE 4.3 on Fedora 11 I have noticed that X CPU usage
> > gets up to 99% of CPU usage and plasma-desktop stays around 20% CUP
> > usage. If I shut everything down on the desktop the usage for both
> > remains at 80 - 99% and 15- 20%. If I end the session (ctl-alt
> > backspace) both X and plasma-desktop drop off to nil CPU usage.
> >
> > Upon restart of KDE CPU usage for X and plasma-desktop is sometimes
> > normal (low) after the system settles, and some times not. But in all
> > cases, after some time the CPU usage for X and plasma-desktop climb back
> > up to 80 to 90% for X and 15 to 25% for plasma-desktop.
> >
> > Anybody else seeing this?
> >
> After more experimenting I've found the following:
>
> Each time I reboot my system, CPU usage for plasma-desktop and X is high
> (as described above).
>
> If I log out (via the Leave menu) and log back in, the high CPU usages
> remains the same.
>
> If I kill X (ctl-alt backspace) then log back in, the desktop comes back up
> with "normal" CPU usage for both, and it stays that way.
>
> I have four CPU cores (two dual core Opterons), so the CPU usage is almost
> unnoticeable in the UI. The UI is just sluggish enough to be noticeable.
> But, it wasn't until I noticed consistently high CPU usage in Gkrellm that
> I began to investigate.
>
Of course your problem may be entirely different, but every time gkrellm shows
me this runaway behaviour I open top. Without fail it is either firefox,
thunderbird or nspluginviewer. Killing those invariably stops the problem.
Anne
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