Subject: Re: MSI 6501 Dual AMD Athlon MP & 1.6 i386 MP kernel
To: MLH <>
From: Thor Lancelot Simon <>
List: tech-smp
Date: 09/09/2002 15:36:55
On Mon, Sep 09, 2002 at 07:35:20PM +0000, MLH wrote:
> I have a couple of MSI 6501 Dual AMD Athlon MP boxes here that
> appear to have the same hardware on them. I loaded the latest 1.6
> with today's i386mp_plus16_stable on both. Both come up fine with
> the latest 1.6 SP kernel, Both cpus come up fine with the MP kernel.
> However, there appears to be a problem with interrupt contention
> on one of the boxes and not the other. As far as I can tell, the
> bioses are set identically and are running the same kernel. Vendor
> claims they are identical, bought at the same time.
> Questions :
> Is there a significance to 
> mainbus0: Intel MP Specification (Version 1.1) (OEM00000 PROD00000000)
> vs.
> mainbus0: Intel MP Specification (Version 1.4) (OEM00000 PROD00000000)

The BIOS settings are *not* the same.  One machine is presenting MP version
1.1, the other MP version 1.4.  This is almost always selectable in the
machine's BIOS; I suggest that you examine the machines' BIOS settings more
carefully and ensure that they're exactly the same.