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From: Marc-Christian Petersen <m.c.p@wolk-project.de>
To: linux-kernel@vger.kernel.org
Subject: Re: NFS performance ...
Date: Sun, 24 Nov 2002 15:23:01 +0100
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Organization: WOLK - Working Overloaded Linux Kernel
Cc: KELEMEN Peter <fuji@elte.hu>, Andrea Arcangeli <andrea@suse.de>
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Hi Peter,

> I have a very simple NFS setup over a siwtched 100Mbit/s network.
> client is Celeron 400MHz/256M RAM, using XFS
> server is dual Pentium Pro 200MHz/1G RAM, using XFS
> server is running Linux 2.4.19-pre8aa3.
>
> Network bandwith can be utilized, because ICMP flooding the
> server results in ~20000 kbit/s network traffic (as of
> iptraf), but NFS (v3,udp) write performance is unacceptably
> slow (around 300 KiB/sec), same results with the following
> kernels:
> Linux 2.4.18-WOLK3.1
> Linux 2.4.18-wolk3.7.1
> Linux 2.4.20-pre8aa2
> However, with 2.4.19-rmap14b-xfs the very same NFS
> performance tops out at 2.54 MiB/sec.  What's the catch?
I think Andrea and me have something in our kernels that may cause it. For me 
I don't know what that can be. I even have no idea what it can be :(

Andrea, you?

Peter, have you also tested v3 over tcp?

ciao, Marc


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