From: "Pedro Venda (SYSADM)" <pjvenda@rnl.ist.utl.pt>
To: Francois Romieu <romieu@fr.zoreil.com>
Subject: Re: ftp server crashes on heavy load: possible scheduler bug
Date: Fri, 29 Apr 2005 15:19:52 +0100
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Cc: linux-kernel@vger.kernel.org, rnl@rnl.ist.utl.pt
References: <200504261402.57375.pjvenda@rnl.ist.utl.pt> <20050427181609.GA21785@electric-eye.fr.zoreil.com>
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On Wednesday 27 April 2005 19:16, Francois Romieu wrote:
> Pedro Venda (SYSADM) <pjvenda@rnl.ist.utl.pt> :
> [...]
>
> > Not being able to see the whole stacktrace on screen, we've started a
> > netconsole to investigate. Started the server and loaded it pretty bad
> > with rsyncs and such... until it crashed after just 20 minutes.
> >
> > The netconsole log was surprising - "kernel BUG at kernel/sched.c:2634!"
>
> Is it reproducible if you disable both preempt and netconsole ?

not sure yet.=20

please note that netconsole was added AFTER some crashes to analise the cra=
sh=20
dump, so I don't think it's directly related.

keep in mind that this is a production machine.

I'll sure test the same kernel without preemption and post results.

thanks.

regards,
pedro venda.
=2D-=20

Pedro Jo=E3o Lopes Venda
email: pjvenda < at > rnl.ist.utl.pt
http://maxwell.rnl.ist.utl.pt

Equipa de Administra=E7=E3o de Sistemas
Rede das Novas Licenciaturas (RNL)
Instituto Superior T=E9cnico
http://www.rnl.ist.utl.pt
http://mega.ist.utl.pt

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