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Date:      Tue, 15 Jul 2008 11:10:54 +1000
From:      "Murray Taylor" <MTaylor@bytecraft.com.au>
To:        "Murray Taylor" <MTaylor@bytecraft.com.au>, "Jeremy Chadwick" <koitsu@freebsd.org>
Cc:        freebsd-hackers@freebsd.org, Sergey Babkin <babkin@verizon.net>
Subject:   RE: massive interrupt storm
Message-ID:  <04E232FDCD9FBE43857F7066CAD3C0F15B837B@svmailmel.bytecraft.internal>

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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=20
> 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=3D"0" and hw.pci.enable_msix=3D"0"
in /boot/loader.conf and reboot.

--=20
| Jeremy Chadwick                                jdc at parodius.com |

----------------------------

Nope, :(
Interrupt usage is still around the 89-95% :(=20

NB sysctl -a | grep msi   returns nothing, and attempting to set the
values
directly returns 'unknown OID'

this is on 6.2 GENERIC

--------


Still looking for any other hints as to what may be causing this storm.
We have tried the msi hints above, with no joy. shutting down USB stuff
in the=20
BIOS (no joy), disabling ACPI on boot (this generates a kernel fault and
reboots)
and different keyboards ( USB only, this thing has no PS/2 ports )

This only thing that made a difference, and that was not totally
repeatable
was unplugging and re-plugging a keyboard after boot.... then the storm
stopped,
but we were still without bge1 (a single NIC firewall is kinda useless!)


Murray Taylor
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