Re: 2.5: system time goes up to 100%

[Andrew Morton]

Arador <[e-mail]> wrote:
>
> Hi, i've the following case (more info provided below):
> 
> procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us sy id wa
>  0  1  44268 124776  10380  64736    5    8    93    37  600   281   11  2 85  3
>  1  0  44268 124160  10584  64736    0    0   196   196 1750  1518  1 41 49  9
> ...
> 8209527 total                                      4,5041
> 8035501 default_idle                             100443,7625
>  39060 ext3_find_entry                           35,9007
>  19200 serial_in                                171,4286
>  18957 check_poison_obj                         131,6458

That all looks OK.  Your machine is waiting on disk I/O.

We changed the representation of the cpu states in /proc a while ago and I
have a vague feeling that this has caused some versions of the userspace
tools to confuse disk-wait with system time.

Try grabbing the latest vmstat from procps.sourceforge.net