From owner-freebsd-bugs  Fri Sep  7  6:28:30 2001
Delivered-To: freebsd-bugs@freebsd.org
Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11])
	by hub.freebsd.org (Postfix) with SMTP id 41C8937B405
	for <freebsd-bugs@FreeBSD.ORG>; Fri,  7 Sep 2001 06:28:27 -0700 (PDT)
Received: from walton.maths.tcd.ie by salmon.maths.tcd.ie with SMTP
          id <aa20121@salmon>; 7 Sep 2001 14:28:26 +0100 (BST)
Date: Fri, 7 Sep 2001 14:28:26 +0100
From: David Malone <dwmalone@maths.tcd.ie>
To: webmaster <webmaster@donfishback.com>
Cc: freebsd-bugs@FreeBSD.ORG
Subject: Re: Dual AMD 1.2Ghz  MP and 760 chipset
Message-ID: <20010907142826.A13406@walton.maths.tcd.ie>
References: <20010907143533.A8131@ringworld.oblivion.bg> <KKEDJAMJCHBEINDLGJGGKENMDCAA.webmaster@donfishback.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
In-Reply-To: <KKEDJAMJCHBEINDLGJGGKENMDCAA.webmaster@donfishback.com>; from webmaster@donfishback.com on Fri, Sep 07, 2001 at 08:15:13AM -0400
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-bugs.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-bugs>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-bugs>
X-Loop: FreeBSD.org

On Fri, Sep 07, 2001 at 08:15:13AM -0400, webmaster wrote:
> I tried to debug without any luck. The system locks hard without a memory
> dump.  There are absolutly no logs or errors reported when the system goes
> down.  All I know for sure is that it happens with the SMP enabled kernel no
> matter which processes I am running.  I doesn't happen with the same
> hardware and software when running with SMP disabled.

Check the fans on both processors and make sure the fans are of
good quality. Many weird freeze ups that I've seen on dual processor
machines are due to bad cooling. (The processors run hotter in SMP
mode 'cos FreeBSD doen't use the "hlt" instruction to reduce power
consumption in SMP mode).

> I know the AMD 'MP' processors are fairly new, has the SMP support in
> FreeBSD been designed to support this family of processors?

People have been running various versions of the Dual AMDs for a
while and I don't think there are any problems known.

	David.

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message