[Beowulf] NFS Performance using SLES 10
bli at bcgsc.ca
Mon Sep 11 13:48:57 EDT 2006
What filesystems were/are you using with CentOS and SLES?
> -----Original Message-----
> From: beowulf-bounces at beowulf.org
> [mailto:beowulf-bounces at beowulf.org] On Behalf Of Tim Moore
> Sent: Monday, September 11, 2006 9:56
> To: beowulf at beowulf.org
> Subject: [Beowulf] NFS Performance using SLES 10
> Hello All!
> I have a small two-node cluster with AMD64 Opteron
> processors. It was
> running Centos 4 and NFS performance was good while not hindering
> performance. I replaced Centos with SLES 10 about 2 weeks
> ago and just
> now got around to really hitting it hard submitting jobs. Processes
> that normally took about 15 seconds such as normal IO (each processor
> writes its own data file) now require 10-15 minutes. When I observed
> the IO status, I saw that I could probably write the file by
> hand faster
> than the 2nd node was writing the files to the server. I
> would have to
> check but I think the mobo has integrated broadcom ethernet. I have
> tried the usual tweaks with respect to rsize and wsize and
> seemed to worsen if it changed at all.
> Has anyone experienced similar issues? And/Or does anyone have
> suggestions outside the wsize and rsize?
> Timothy W. Moore
> President & Chief Scientist, Special Programs
> Trident Consulting Group, Inc.
> 600 Boulevard South, Suite 106
> Huntsville, AL 35802
> Office: (256) 882-1001
> Fax: (256) 882-1002
> Cell: (256) 348-9702
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