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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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@oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users
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@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) > > ------------------------------------------------------------------------ > Looking for a deal? Find great prices on flights and hotels > > with Yahoo! FareChase. > ------------------------------------------------------------------------ > > _______________________________________________ > Ocfs2-users mailing list > Ocfs2-users@oss.oracle.com > http://oss.oracle.com/mailman/listinfo/ocfs2-users--------------------------------- Tonight's top picks. What will you watch tonight? Preview the hottest shows on Yahoo! TV. --------------------------------- Need a vacation? Get great deals to amazing places on Yahoo! Travel. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://oss.oracle.com/pipermail/ocfs2-users/attachments/20070913/6e1d15ae/attachment.html