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Date:      Thu, 29 Mar 2001 23:48:18 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        Rami AlZaid <lists@alzaid.com>
Cc:        David Malone <dwmalone@maths.tcd.ie>, freebsd-stable@FreeBSD.ORG
Subject:   Re: nfsd Benchmark
Message-ID:  <20010329234818.V9431@fw.wintelcom.net>
In-Reply-To: <5.1.0.12.2.20010330021234.030aa6e0@mail.alzaid.com>; from lists@alzaid.com on Fri, Mar 30, 2001 at 02:16:33AM -0500
References:  <5.1.0.12.2.20010327202300.04c60e10@wheresmymailserver.com> <5.1.0.12.2.20010327202300.04c60e10@wheresmymailserver.com> <20010328102955.A92875@walton.maths.tcd.ie> <5.1.0.12.2.20010330021234.030aa6e0@mail.alzaid.com>

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* Rami AlZaid <lists@alzaid.com> [010329 23:17] wrote:
> I've compiled the debugger into the kernel and read the section about that 
> in the handbook but now after the crash there isn't any dump restored! I 
> tried using the ctl-alt-esc but that doesn't help... when the machined is 
> killed I'm not about to do anything with it at all other than resetting the 
> machine.

Did you add a line for dumpdev in /etc/rc.conf?


> 
> At 04:29 AM 3/28/2001, you wrote:
> >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?
> 
> Rami AlZaid  <rami (at) alzaid (dot) com>  *  ICQ # 1071118
> WebPages: www.alzaid.com  *  www.wooyeah.com
> 
> 
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-- 
-Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org]
Instead of asking why a piece of software is using "1970s technology,"
start asking why software is ignoring 30 years of accumulated wisdom.

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