Xorg often taking a lot of CPU, whole system slow

[NoOp]

On 01/18/2010 12:53 AM, Dotan Cohen 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!
> 

These might be of help:
https://wiki.ubuntu.com/X/Troubleshooting/HighCPU
https://wiki.ubuntu.com/X/Backtracing
https://wiki.ubuntu.com/X/Reporting
<http://www.google.com/search?complete=0&hl=en&q=kubuntu+%2Bxorg+%2Bcpu&btnG=Search>

https://bugs.launchpad.net/ubuntu/+source/xorg-server
<https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/294972>