On 09/03/2009 01:50 AM, Anne Wilson wrote:
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
In this case the X and plasma-desktop CPU usage increase happens immediately after
the desktop comes up. Before any applications except Kontact and Gkrellm. When I close
those two apps top still shows X CPU usage at 80-99% and plasma-desktop usage at 18-25%.
Only hitting ctl-alt backspace and re-logging in stops that excessive CPU usage by those
to processes.
Emmett