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From: Neil Brown <neilb@cse.unsw.edu.au>
To: Stephan von Krawczynski <skraw@ithnet.com>
Date: Mon, 14 Oct 2002 13:38:32 +1000
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Cc: trond.myklebust@fys.uio.no, linux-kernel@vger.kernel.org
Subject: Re: nfs-server slowdown in 2.4.20-pre10 with client 2.2.19
In-Reply-To: message from Stephan von Krawczynski on Monday October 14
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On Monday October 14, skraw@ithnet.com wrote:
> > 
> > Very odd...  There were no changes between pre9 and pre10 that
> > directly relate to the nfs server, and none that immediately jump out
> > at me that could cause a slowdown in NFS writes.
> > 
> > What architecture?  PPC saw a lot of updates.
> 
> i386, namely dual PIII 1GHz with 1 GB RAM
> Are you sure it has nothing to do with the latest patch and SMP:
> 
> Trond Myklebust <trond.myklebust@fys.uio.no>:
>   o Workaround NFS hangs introduced in 2.4.20-pre

Nope.  This is purely client side.  The nfs server doesn't go anywhere
near this code.

> 
> > What filesystem?  jfs saw one change
> 
> reiserfs 3.6
> 
> > What storage device?  IDE or SCSI?
> 
> IDE, PDC20268
> 

Well, I cannot see any changes between pre9 and pre10 that would have
any effect on an nfs server with your configuration...

> > Can you try going back to -pre9 and confirm that performance comes
> > back?
> 
> I will have a second try on the issue this night and be back with
> info tommorrow.

Thanks.  hopefully that will shed some light.

NeilBrown