From owner-freebsd-current@FreeBSD.ORG  Wed Jul  9 14:47:20 2003
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5972237B401
	for <freebsd-current@freebsd.org>;
	Wed,  9 Jul 2003 14:47:20 -0700 (PDT)
Received: from mail.speakeasy.net (mail16.speakeasy.net [216.254.0.216])
	by mx1.FreeBSD.org (Postfix) with ESMTP id BB6A043FBF
	for <freebsd-current@freebsd.org>;
	Wed,  9 Jul 2003 14:47:19 -0700 (PDT)	(envelope-from jhb@FreeBSD.org)
Received: (qmail 5924 invoked from network); 9 Jul 2003 21:47:19 -0000
Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63])
	(envelope-sender <jhb@FreeBSD.org>)encrypted SMTP
	for <brooks@one-eyed-alien.net>; 9 Jul 2003 21:47:19 -0000
Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1])
	by server.baldwin.cx (8.12.9/8.12.9) with ESMTP id h69LlEGI099979;
	Wed, 9 Jul 2003 17:47:15 -0400 (EDT)
	(envelope-from jhb@FreeBSD.org)
Message-ID: <XFMail.20030709174728.jhb@FreeBSD.org>
X-Mailer: XFMail 1.5.4 on FreeBSD
X-Priority: 3 (Normal)
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 8bit
MIME-Version: 1.0
In-Reply-To: <3F0C7A42.2080501@liwing.de>
Date: Wed, 09 Jul 2003 17:47:28 -0400 (EDT)
From: John Baldwin <jhb@FreeBSD.org>
To: Jens Rehsack <rehsack@liwing.de>
cc: Andrey Chernov <ache@nagual.pp.ru>
cc: freebsd-current@freebsd.org
cc: Lukas Ertl <l.ertl@univie.ac.at>
Subject: Re: HTT on single CPU?
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Jul 2003 21:47:20 -0000


On 09-Jul-2003 Jens Rehsack wrote:
> Brooks Davis wrote:
> 
>> 
>> P4's below ~3.1GHz do not actually provide logical CPU support.
> 
> That's not true. German distributors sell P4 CPU's FSB 800
> (starting at 2.4GHz) which supports HTT.
> 
> I know, that BSD didn't found 2 logical CPU's as John remarked,
> but I didn't understood why the CPU has the feature for HTT but
> no additional logical CPU's?

The bit just means that you can ask the CPU how many cores it
contains.  All P4's have this bit.  Early ones just say that they
contain only 1 core when you ask. :)

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/