Re: NFS performance ...

From: Marc-Christian Petersen (m.c.p@wolk-project.de)
Date: Sun Nov 24 2002 - 09:23:01 EST


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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