On Saturday 16 September 2006 00:32, Brent Franks wrote: > On 9/15/06, Chris Samuel <[EMAIL PROTECTED]> wrote: > > > Wild guess - NFS servers are running RHEL and using ext3 ? > > Exactly.
If you are using RHEL4 and are not at Update 4 already then apparently there is a RH induced bug in the default cfq io_scheduler and the work around is (according to Oracle at least [1]) to set the node to use the deadline scheduler at boot time as well. The better fix is apparently to update to RHEL4 U4. [1] - Their OCFS2 page says: # RHEL4 U2 and U3 users are advised to use the DEADLINE io scheduler instead # of the default CFQ due to Bugzilla# 184535. (Ed: [2]) [2] - https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=184535 cheers, Chris -- Christopher Samuel - (03)9925 4751 - VPAC Deputy Systems Manager Victorian Partnership for Advanced Computing http://www.vpac.org/ Bldg 91, 110 Victoria Street, Carlton South, VIC 3053, Australia
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