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Date:      Sun, 12 Nov 2006 10:03:41 -0600
From:      "Jeff Hinrichs - DM&T" <jeffh@dundeemt.com>
To:        "FreeBSD Questions" <freebsd-questions@freebsd.org>
Subject:   Re: 6.x hangs on AMD64 again
Message-ID:  <5aaed53f0611120803p37cdad73ld722bf822cb0ccbe@mail.gmail.com>
In-Reply-To: <20061111195632.GA8718@xor.obsecurity.org>
References:  <83083882-E193-445F-AF3D-E3ECD1E243B1@hughes.net> <20061111063049.GA81772@xor.obsecurity.org> <608516EC-BBD0-40E7-A773-2E8056981FAA@hughes.net> <20061111195632.GA8718@xor.obsecurity.org>

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On 11/11/06, Kris Kennaway <kris@obsecurity.org> wrote:
> On Sat, Nov 11, 2006 at 11:15:54AM -0800, Chris wrote:
> > >
> > >If your system is hanging then you need to configure additional
> > >debugging to figure out the cause.  Read the chapter on kernel
> > >debugging the developers handbook; without this information no
> > >developer can help you.
> > >
> > >Kris
> > >
> > >P.S. In my testing SMP amd64 is quite stable even under exceptionally
> > >heavy loads, so it's either something related to your hardware or your
> > >particular workload.
> >
> > Hadn't considered that a user level debugging solution. I'll give it
> > a try.
> >
> > We had considered it possibly related to our mix because the SuperMicro
> > dual xeon we are trying to replace it with was rebooting (not hanging)
> > without any error messages every 15-20 days. I thought it was failing
> > hardware. It's on 6.1 R P10. Maybe related in some way.
>
> That is indeed almost always failing hardware.
>
> Kris
>
>
>

I had a similiar issue of rebooting or more specifically shutting
down.  The BIOS would also loose it's config.  After some hardware
swapping it turned out to be the power supply.

-- 
Jeff Hinrichs
Dundee Media & Technology, Inc
jeffh@dundeemt.com



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