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

[Sunil Mushran]

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)
>
> ------------------------------------------------------------------------
> Looking for a deal? Find great prices on flights and hotels 
> <http://us.rd.yahoo.com/evt=47094/*http://farechase.yahoo.com/;_ylc=X3oDMTFicDJoNDllBF9TAzk3NDA3NTg5BHBvcwMxMwRzZWMDZ3JvdXBzBHNsawNlbWFpbC1uY20-> 
> with Yahoo! FareChase.
> ------------------------------------------------------------------------
>
> _______________________________________________
> Ocfs2-users mailing list
> Ocfs2-users at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-users