From owner-freebsd-amd64@FreeBSD.ORG Wed May 18 18:53:57 2005 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 443EE16A4D0; Wed, 18 May 2005 18:53:57 +0000 (GMT) Received: from anuket.mj.niksun.com (gwnew.niksun.com [65.115.46.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id 92DF743DD3; Wed, 18 May 2005 18:53:56 +0000 (GMT) (envelope-from jkim@niksun.com) Received: from [10.70.0.244] (daemon.mj.niksun.com [10.70.0.244]) by anuket.mj.niksun.com (8.13.1/8.13.1) with ESMTP id j4IItng1000968; Wed, 18 May 2005 14:55:49 -0400 (EDT) (envelope-from jkim@niksun.com) From: Jung-uk Kim Organization: Niksun, Inc. To: freebsd-amd64@freebsd.org Date: Wed, 18 May 2005 14:53:49 -0400 User-Agent: KMail/1.6.2 References: <428B6FC1.3000907@fsn.hu> <20050518180521.GB9719@odin.ac.hmc.edu> <200505181441.39457.jkim@niksun.com> In-Reply-To: <200505181441.39457.jkim@niksun.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <200505181453.49988.jkim@niksun.com> X-Virus-Scanned: ClamAV 0.83/880/Mon May 16 11:00:02 2005 on anuket.mj.niksun.com X-Virus-Status: Clean cc: Pav Lucistnik Subject: Re: FreeBSD on dual core Opterons - stupid buildworld test X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 May 2005 18:53:57 -0000 On Wednesday 18 May 2005 02:41 pm, Jung-uk Kim wrote: > On Wednesday 18 May 2005 02:05 pm, Brooks Davis wrote: > > On Wed, May 18, 2005 at 07:29:00PM +0200, Pav Lucistnik wrote: > > > Attila Nagy pí?e v st 18. 05. 2005 v 18:39 +0200: > > > > Hello, > > > > > > > > I did some buildworld tests on an HP BL45p with 4 2,2 GHz > > > > Opterons. > > > > > > > > Sequential time make buildworld -jX times (if there is a > > > > missing iteration, then the build has failed): > > > > > > > > http://people.fsn.hu/~bra/bl45p/dmesg.boot > > > > > > > > Hyperthreading: 2 logical CPUs > > > > > > So dual-core Opterons report into system as Hyperthreading? > > > Uncool. > > > > What the AMD reps said at a session I attended last year is that > > they report as supporting hyper threading, but set another bit to > > say that they are actually real cores. We probably need to find > > out what that bit is. > > FYI, Linux says: > > http://lxr.linux.no/source/include/asm-x86_64/cpufeature.h#L78 > http://lxr.linux.no/source/arch/x86_64/kernel/setup.c#L834 Check 'Logical Processor Count' (Page 122): http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/24594.pdf Jung-uk Kim > Jung-uk Kim > > > -- Brooks