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Date: Wed, 19 Sep 2007 21:56:54 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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Cc: freebsd-questions@freebsd.org
Subject: Re: FreeBSD constantly hanging
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Deceased wrote:
> Hi,
> 
> I have a serious problem, that I cannot solve my self :(
> 
> I have freebsd 6.2 router that has 3 NICs (lan, wan, dmz), suddenly 
> (about two weeks ago) it started to hang without leaving anything in 
> logs. I thought that it was hardware problem. So at first I changed 
> motherboard, ram, cpu, NIC's, PSU, I kept changing everything but it was 
> still hanging :/, reinstalled, but it didn't help.
> 
> Then we got brand new PC and I did fresh install of 6.2_RELEAS-200708, 
> but to my surprise it was still hanging. There may by power issues, but 
> in the same place there are 2 more servers : HP Proliant ML310 G4 with 
> windoze and second is simple P4 1.6Ghz with 6.0-STABLE, both of them are 
> not hanging.
> 
> Hanging machine is connected to the APC 350 ups, but it does not help.
> 
> Thank You for your thoughts.

Read the developers handbook chapter on kernel debugging to see how to 
go about obtaining the necessary debugging information for your PR.

Kris