2008-04-15 13:58:53

by J. Bruce Fields

[permalink] [raw]
Subject: Re: [NFS] How to set-up a Linux NFS server to handle massive number of requests

On Tue, Apr 15, 2008 at 07:42:45AM +0200, Carsten Aulbert wrote:
> By the ways, discussing this issue with my colleague cluster admins, the
> question popped up, if there is a guideline/rule of thump of how many
> nfsd one should run - or asking the other way round, how to arrive at a
> good compromise.
> Our server boxes are pretty big (8 cores, 16 GB memory, 16 disk
> Areca1261 RAID6), so the resources used by the nfsd are not much of an
> issue - I even tested with 1024 nfsd idling around. AT some point
> increasing the number does not make much sense because I cannot get the
> data out fast enough or the seeks will likely "kill" the box^Wperformance.
> Any thoughts on that?

The only advice I know of is to check the "th" line in
/proc/net/rpc/nfsd and adjust the number of threads until you can verify
that they're rarely all in use; see



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