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Date:      Sat, 31 Jan 1998 12:49:11 -0700
From:      Steve Passe <smp@csn.net>
To:        Tony Johnson <gjohnson@staff.communique.net>
Cc:        freebsd-smp@FreeBSD.ORG
Subject:   Re: SMP problems 
Message-ID:  <199801311949.MAA12557@Ilsa.StevesCafe.com>
In-Reply-To: Your message of "Sat, 31 Jan 1998 11:29:15 CST." <A03CD00C69B1D01195AB00A024ECEB1661F98A@kaori.communique.net> 

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Hi,

> I have experimented with my equipment and FreeBSD 3.0.971225.  I have a
> tyan titan pro atx motherboard with 2 dual ppro 180's.  If I take
> kernel.generic and put these options in and compile/install...
> 
> 
> options	SMP
> options	APIC_IO
> options	NCPU=2
> options	NBUS=4
> options	NAPIC=1
> options	NINTR=15
> options	SMP_INVLTLB

nuke everything but:

> options	SMP
> options	APIC_IO


> 
> Freebsd will launch the seconf processor and then time out.  The OS will
> no longer be able to access either my scsi drive of my aha-3940.  BTW
> FreeBSD is installed on the second channel of this card.  I know NT
> doesn't see the second channel for some reason , but glad FreeBSD does.

the 3940 is a bridged pci card and doesn't work with most MP tables (the
BIOS writers usually blow this one).  See:

http://www.freebsd.org/~fsmp/SMP/pcibridge.html
--
Steve Passe	| powered by 
smp@csn.net	|            Symmetric MultiProcessor FreeBSD





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