8-STABLE interrupt storm on atapci(?), Dell Inspiron 580

[Jeremy Chadwick]

On Fri, Mar 12, 2010 at 01:14:09PM +0100, Pierre Beyssac wrote:
> I'm having "interrupt storm detected" messages on a Dell Inspiron
> 580 running up-to-date 8-STABLE (amd64 arch). The interrupts seem
> to come from one of the atapci controllers, apparently atapci0 (main
> controller, with a SATA disk and an ATAPI optical drive).

I'm a little confused by the kernel output.  It appears as if you're
using the new SATA-to-CAM layer (ahci.ko) for your SATA disks, rather
than the ataahci.ko layer... but I don't see any indication of AHCI
being available/used on your southbridge chipset.

Possibly this is the source of the problem (specifically, it looks like
FreeBSD doesn't have proper device ID knowledge of what this controller
is.  I believe that's because this system is *very* new, a Core i3/i5/i7
system)?

If you disable use of ahci.ko and use the standard ata(4) layer, does
the interrupt storm go away?

-- 
| 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 |