From owner-freebsd-amd64@FreeBSD.ORG Wed May 18 20:14:29 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 40FE916A4CE for ; Wed, 18 May 2005 20:14:29 +0000 (GMT) Received: from ford.blinkenlights.nl (ford.blinkenlights.nl [213.204.211.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 958FC43D95 for ; Wed, 18 May 2005 20:14:26 +0000 (GMT) (envelope-from sten@blinkenlights.nl) Received: from tea.blinkenlights.nl (tea.blinkenlights.nl [192.168.1.21]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ford.blinkenlights.nl (Postfix) with ESMTP id AEF033F294; Wed, 18 May 2005 22:14:12 +0200 (CEST) Received: by tea.blinkenlights.nl (Postfix, from userid 101) id 49221286; Wed, 18 May 2005 22:14:12 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by tea.blinkenlights.nl (Postfix) with ESMTP id 2F66A276; Wed, 18 May 2005 22:14:12 +0200 (CEST) Date: Wed, 18 May 2005 22:14:12 +0200 (CEST) From: Sten Spans To: Astrodog In-Reply-To: <2fd864e05051811442152fa@mail.gmail.com> Message-ID: References: <428B6FC1.3000907@fsn.hu> <1116437340.69035.0.camel@hood.oook.cz> <200505181441.39457.jkim@niksun.com> <2fd864e05051811442152fa@mail.gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed cc: freebsd-amd64@freebsd.org 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 20:14:29 -0000 On Wed, 18 May 2005, Astrodog wrote: > On 5/18/05, Jung-uk Kim wrote: >> >> 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 >> >> Jung-uk Kim >> > > Opteron reports Hyperthreading, because it tries to take advantage of > the licencing benifit. Keep in mind, HT P4s are counted as a single > CPU for the most part, in a licence. Opteron may not. By acting as > though its a HT processor, it gets that same benifit. And some windows software only uses multiple threads when htt is available ... -- Sten Spans "There is a crack in everything, that's how the light gets in." Leonard Cohen - Anthem