How to clear CPU congestion?

[Darrin Chandler]

On Mon, Feb 12, 2007 at 11:18:27AM -0700, Josef Lowder wrote:
> .
> I asked this question a while ago and never did get a solution, 
> so thought I would try again.  My system normally runs with a 
> very small number appearing for "X" under %CPU ... but sometimes 
> something happenss that causes it to jump to a high number (as 
> shown below) and the only way I have found to clear it is to 
> reboot.  Then it runs fine for quite a while until the same 
> problem occurs again.  Surely there must be some way to clear out 
> whatever is causing this log jam other than reboot. 
> 
> Any suggestions? 

Restarting X should take care of it.

Very occassionally this happens to me as well. Whatever causes it, X
will get into a funky state and eat the CPU. Closing app the apps
doesn't help, but quitting X and starting up again does.

Depending on how you work and the distro you're using, restarting X may
be just as inconvenient for you as rebooting, only it will save a
little time.

> top - 11:12:12 up 7 days,  2:14,  5 users,  load average: 1.01, 1.07, 1.08
> Tasks:  82 total,   2 running,  80 sleeping,   0 stopped,   0 zombie
> Cpu(s): 56.3% us, 11.6% sy,  5.9% ni, 25.9% id,  0.1% wa,  0.2% hi,  0.0% si
> Mem:    515484k total,   417720k used,    97764k free,    11952k buffers
> Swap:  2096440k total,     2696k used,  2093744k free,   244728k cached
> 
>   PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
>  3364 root      25   0 48356  38m 4732 R 97.2  7.6   6673:44 X
>     1 root      16   0  1564  540  472 S  0.0  0.1   0:02.50 init
>     2 root      34  19     0    0    0 S  0.0  0.0   0:00.00 ksoftirqd/0
>     3 root      10  -5     0    0    0 S  0.0  0.0   0:02.82 events/0
>     4 root      10  -5     0    0    0 S  0.0  0.0   0:00.01 khelper
>     5 root      18  -5     0    0    0 S  0.0  0.0   0:00.00 kthread
>     7 root      20  -5     0    0    0 S  0.0  0.0   0:00.00 kacpid
>    81 root      10  -5     0    0    0 S  0.0  0.0   0:00.11 kblockd/0
>   113 root      15   0     0    0    0 S  0.0  0.0   0:00.62 pdflush
>   114 root      15   0     0    0    0 S  0.0  0.0   0:00.34 pdflush
>   116 root      19  -5     0    0    0 S  0.0  0.0   0:00.00 aio/0
>   115 root      15   0     0    0    0 S  0.0  0.0   0:03.71 kswapd0
>   704 root      15   0     0    0    0 S  0.0  0.0   0:00.01 kseriod
> 
> 
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-- 
Darrin Chandler                   |  Phoenix BSD Users Group
dwchandler at stilyagin.com          |  http://bsd.phoenix.az.us/
http://www.stilyagin.com/darrin/  |