Re: [Xen-users] 100% iowait in domU with no IO tasks.

[Tomasz Chmielewski <mangoo@xxxxxxxx>]

Bogdan B. Rudas schrieb:
> Hi. 
>
> I entered one of our domU tonight and see following problem: 
>
> # iowait -k 5
>
> avg-cpu:  %user   %nice %system %iowait  %steal   %idle
>
>            0.00    0.00    0.00  100.00    0.00    0.00
>
> Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
> sda1              0.00         0.00         0.00          0          0
> sda2              0.00         0.00         0.00          0          0
>
> I check other domU and dom0 on same server - there were high iowait: from 20% 
> to 50% with few transactions per second and about 0.1-1.5 Mb/sec storage 
> bandwith usage per domU. This domU have no disk IO at all but show LA 15 and 
> possible higher.
Did you check for processes in a "D" state?

ps aux | grep " D"



--
Tomasz Chmielewski
http://wpkg.org

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