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Date:      Wed, 28 Mar 2001 10:29:55 +0100
From:      David Malone <dwmalone@maths.tcd.ie>
To:        Rami AlZaid <lists@alzaid.com>
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   Re: nfsd Benchmark
Message-ID:  <20010328102955.A92875@walton.maths.tcd.ie>
In-Reply-To: <5.1.0.12.2.20010327202300.04c60e10@wheresmymailserver.com>; from lists@alzaid.com on Tue, Mar 27, 2001 at 08:29:35PM -0500
References:  <5.1.0.12.2.20010327202300.04c60e10@wheresmymailserver.com>

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On Tue, Mar 27, 2001 at 08:29:35PM -0500, Rami AlZaid wrote:
>          I'm currently running 4.3-BETA and I'm trying to benchmark nfsd 
> with iozone. When using a Linux machine (2.2.18) as the nfs client and a 
> FreeBSD machine as the nfs server, the whole FreeBSD machine hangs when 
> trying to benchmark and the only thing I could do is turn it off and turn 
> it back on again. The nfsd works fine in normal usage but it just hangs 
> when benchmarking. Does anyone know why would nfsd hangs the FreeBSD 
> machine when trying to benchmark it? is this a bug?

Definitely a bug. Linux used to have lousy clustering, which would
result in the NFS server being hit harder during writes, but I
think this has been fixed. It shouldn't kill the server either
way. Have you tried compiling the debugger into the kernel and
using ctl-alt-esc when it is wedged?

(You'll find details of how to do this in the handbook.)

	David.

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