Xorg often taking a lot of CPU, whole system slow

[drew einhorn]

On Mon, Jan 18, 2010 at 1:53 AM, Dotan Cohen <dotancohen at gmail.com> wrote:

> Often, my Kubuntu 9.10 system slows to a crawl. When this happens,
> Xorg is usually the culprit:
>
> top - 10:51:32 up  2:03,  2 users,  load average: 0.72, 0.49, 0.29
> Tasks: 168 total,   2 running, 166 sleeping,   0 stopped,   0 zombie
> Cpu(s): 31.1%us,  7.9%sy,  0.0%ni, 61.0%id,  0.0%wa,  0.0%hi,  0.0%si,
>  0.0%st
> Mem:   2060628k total,  1631280k used,   429348k free,     1132k buffers
> Swap:  2931852k total,        0k used,  2931852k free,   692632k cached
>
>  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  1206 root      20   0  526m 157m  19m S   45  7.8  26:22.25 Xorg
>  1756 dotancoh  20   0  472m 240m  24m S   18 11.9  29:01.06 firefox
>  1632 dotancoh  20   0  244m  28m  20m S    7  1.4   8:59.91 kwin
>
>
> What is Xorg doing? How can I diagnose this? Thanks!
>

I've seen similar symptoms on a box with an older ati video card.
I assumed it's something quirky with the card or driver,
and haven't gotten around to digging into this problem

The box is a half hour drive from here.  If anyone is interested
I can check the exact model, etc., next time I visit there.


-- 
Drew Einhorn
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