[Ocfs2-users] linux:: very high iowait %

[W S]

  Hi Sunil,
   
  What tools you recommend to diagnose this device? Is there anything I can tweak with ocfs2?
  We have other systems using same schema and by running iostat or nmon I don’t see bottleneck problem like on ocfs2

   
  Thanks,
  -WS

Sunil Mushran <Sunil.Mushran at oracle.com> wrote:
  Start by diagnosing the the device itself.

W S wrote:
> Folks,
> 
> We have two linux systems clustered with ocfs2.
> Both systems has VERY HIGH % on iowait - ranging from 30% to 60%.
> Where should I start looking at first?
> 
> Thanks,
> --WS
> 
> [ocfs2]$ iostat -x
> Linux 2.6.9-22.0.1.ELsmp 
> avg-cpu: %user %nice %sys %iowait %idle
> 18.66 0.00 9.88 42.46 49.00
> 
> [ocfs2]$ cat /etc/redhat-release
> Red Hat Enterprise Linux AS release 4 (Nahant Update 1)
>
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