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List:       freebsd-smp
Subject:    Re: Dell PE1850 kernel panic
From:       "Simon L. Nielsen" <simon () freebsd ! org>
Date:       2006-05-19 8:51:48
Message-ID: 20060519085147.GA1109 () zaphod ! nitro ! dk
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On 2006.05.19 16:40:52 +0800, Chris Leung wrote:
> Dear all,
> 
> I am not sure am I posting to the right mailing list.  However, I've get 
> the following problem.
> 
> I have 5 pieces of the same configuration of Dell PE1850 dual Xeon 3Ghz
> machine excpet 2 of them is 2GB Ram instead of 1GB.  They are running
> similar set of application on FreeBSD 5.4 platform with custom kernel with
> IPFILTER, IPFIREWALL and SMP enabled.
> 
> I have the problem as follow:
> 
> 1 machine running very well and stable with HTT enable.
> 
> 2 machines will be freeze when running around several hours but machines
> become stable when turn off HTT.
> 
> 2 machines will freeze when running around several hours whatever HTT
> setting.  And machine seem good if running with Kernel without option SMP.
> 
> I would like to know if anyone having the similar experience as us?

Have you disabled USB in the BIOS?  I can't recall exactly what the
problem is (something related to interrupts AFAIR), but the effect is
that you will see the system hang if you don't disable USB on Dell
PE1850's.  I haven't had a problem since I disabled USB.

The problem has been discussed several times in the past on the
FreeBSD lists.

-- 
Simon L. Nielsen

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