NFS Performance (was Re: [Beowulf] GPFS on Linux (x86))
mwill at penguincomputing.com
Fri Sep 15 08:36:24 PDT 2006
I am puzzled by an sles9sp3 (2.6.9 kernel) nfs server that serves rhel3 (2.4.21 kernel) compute nodes. For some reason a lot of times the mounts fail (with default as well as modified parameters). The symptom is mount: rpc timeout. The server logs all authentification requests as successful. The switch is an oversubscribed hp 4108gl.
Google turned up nothing useful.
From: Brent Franks [mailto:brentasterisk at gmail.com]
Sent: Fri Sep 15 07:47:11 2006
To: Chris Samuel
Cc: beowulf at beowulf.org
Subject: Re: NFS Performance (was Re: [Beowulf] GPFS on Linux (x86))
On 9/15/06, Chris Samuel <csamuel at vpac.org> wrote:
> Wild guess - NFS servers are running RHEL and using ext3 ?
> We used to have that problem with the 2 NFS servers for our 90 node cluster
> till we dumped RHEL, switched to Fedora and XFS and all our horrible NFS
> problems went away.
Nice, any sort of comparison data in terms of differences in
Additionally, are you writing your journal to a different partition?
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