freebsd stable - Jul 2004 - SMP and NMI errors (4.10)

I have a 4.10-p2 box with dual Xeon CPUs and Tyan S2727 motherboard.

During buildworld I get:

Jul 11 18:28:41 server /kernel: NMI ISA 2c, EISA ff

Roughly about 10-40 times during the build.

If I boot a uniprocessor kernel this problem doesn't occur.

Also, when I first put the machine together I ran with a single CPU
installed and also noticed this problem (probably to a lesser extent),
with a SMP kernel seeing 2 CPUs because of the HT.

I have tried disabling ACPI in the BIOS.

I ran memtester for about 7 runs without any errors.
>From the list archives I read that these errors are indicative of a 
hardware problem but I am unsure of this seeing that a uniprocessor 
kernel does not exhibit the problem.

The machine has never panic'd or hung, but obviously these errors
aren't very encouraging.

(Disk controller is 3ware 7006-2 if that makes any difference)

Anyone have any clues to what's going on here?

-Paul-

On Sun, 11 Jul 2004, Paul Civati wrote:
>
> I have a 4.10-p2 box with dual Xeon CPUs and Tyan S2727 motherboard.
>
> During buildworld I get:
>
> Jul 11 18:28:41 server /kernel: NMI ISA 2c, EISA ff
>
> Roughly about 10-40 times during the build.
NMIs sometimes get triggered for ECC corrections, which is why a memtester
wouldn't see it.  I think there is a kernel option somewhere that hooks
NMI and attempts to get information from the platform as to what DIMM
triggered it. Otherwise you might check the Event Log in the BIOS for ECC
events.
> If I boot a uniprocessor kernel this problem doesn't occur.
It might be temperature related then :)

-- 
Doug White                    |  FreeBSD: The Power to Serve
dwhite@gumbysoft.com          |  www.FreeBSD.org