From owner-freebsd-stable Wed Sep 4 17:32:12 2002 Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CFB0037B400 for ; Wed, 4 Sep 2002 17:32:09 -0700 (PDT) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 93CCA43E3B for ; Wed, 4 Sep 2002 17:32:09 -0700 (PDT) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id DC9B872FC5; Wed, 4 Sep 2002 17:28:42 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id D8BB272D9E; Wed, 4 Sep 2002 17:28:42 -0700 (PDT) Date: Wed, 4 Sep 2002 17:28:42 -0700 (PDT) From: Doug White To: Arnvid Karstad Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD, SMP and Stepping. In-Reply-To: <20020904202358.F72C.ARNVID@karstad.org> Message-ID: <20020904172718.L27143-100000@carver.gumbysoft.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, 4 Sep 2002, Arnvid Karstad wrote: > Hello, > > I was wondering a bit on how FreeBSD handled SMP systems where the cpu's > aint 100% .. We have an SMP system that runs fine on Linux 2.2, but not > 2.4 and is a bit curious on how this would be able to run under BSD... Its probably a part of Intel's and your motherboard spec actually, but generally SMP is only supported on CPUs of the same family and model. At least recently, Intel says that all steppings of a particular model are SMP-interoperable, but not of differing models. > model : 3 > model name : Pentium II (Klamath) > stepping : 4 vs.. > model : 5 > model name : Pentium II (Deschutes) > stepping : 2 -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message