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Date:      Mon, 05 Apr 2010 13:28:40 -0500
From:      Nathan Whitehorn <nwhitehorn@freebsd.org>
To:        Kevin Day <toasty@dragondata.com>
Cc:        freebsd-ppc@freebsd.org
Subject:   Re: Xserve G4 stability (random processes crashing)
Message-ID:  <4BBA2BD8.9050003@freebsd.org>
In-Reply-To: <CD09F9CA-2A98-479E-9C96-2DFDAEA42731@dragondata.com>
References:  <40B1BEB2-6620-4188-BB71-F8B5ED4AA234@dragondata.com> <4BB5EE68.2040504@freebsd.org> <7F22E2B9-34FB-4E3B-981E-8D2EF73A4F64@dragondata.com> <4BB7A9B2.3080901@freebsd.org> <CD09F9CA-2A98-479E-9C96-2DFDAEA42731@dragondata.com>

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Kevin Day wrote:
> On Apr 3, 2010, at 3:48 PM, Nathan Whitehorn wrote:
>   
>> Since you say UP kernels have the same problems, other G4 machines seem not to have issues, and SMP G5 Xserves are completely stable, that points at some G4 Xserve-specific piece of hardware. I'd guess the ATA controller. Could you try chroot to an NFS volume mounted from a known-stable machine, or a USB or Firewire disk, and trying the same things?
>> -Nathan
>>     
>
> Okay, i've done some more playing... The problem still happens even if TMPDIR, /usr/src and /usr/obj are NFS mounted to another system.
>
> I'm fiddling more, but I think that rules out ATA then. 
>
> The problem seems to take a long while to first appear, but once it does appear it happens pretty fast repeatedly after that. Is it possible the fan controls aren't working right?
>   
That's possible. The fan control settings are done completely by 
hardware, though. Can you try with the whole system on NFS (i.e. a 
chroot or netbooting)?
-Nathan



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