From owner-freebsd-hackers@FreeBSD.ORG  Tue Jul  8 07:36:31 2008
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Date: Tue, 8 Jul 2008 00:36:30 -0700
From: Jeremy Chadwick <koitsu@FreeBSD.org>
To: Murray Taylor <MTaylor@bytecraft.com.au>
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Cc: freebsd-hackers@freebsd.org, Sergey Babkin <babkin@verizon.net>
Subject: Re: massive interrupt storm
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On Tue, Jul 08, 2008 at 05:21:34PM +1000, Murray Taylor wrote:
> We have variously shutdown all USB in the bios, pulled the 
> Raid daughter board, and still cant solve this storm.

Have you tried disabling MSI and MSI-X in FreeBSD to see if it makes a
difference?  Set hw.pci.enable_msi="0" and hw.pci.enable_msix="0"
in /boot/loader.conf and reboot.

-- 
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |