From owner-freebsd-current@FreeBSD.ORG Fri Apr 30 07:51:36 2004 Return-Path: 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 2EE4316A4CE for ; Fri, 30 Apr 2004 07:51:36 -0700 (PDT) Received: from mail5.speakeasy.net (mail5.speakeasy.net [216.254.0.205]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0002243D58 for ; Fri, 30 Apr 2004 07:51:35 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 24431 invoked from network); 30 Apr 2004 14:51:35 -0000 Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) encrypted SMTP for ; 30 Apr 2004 14:51:35 -0000 Received: from 10.50.40.205 (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.11/8.12.11) with ESMTP id i3UEpXeH035788; Fri, 30 Apr 2004 10:51:33 -0400 (EDT) (envelope-from jhb@FreeBSD.org) From: John Baldwin To: freebsd-current@FreeBSD.org Date: Fri, 30 Apr 2004 10:51:49 -0400 User-Agent: KMail/1.6 References: In-Reply-To: MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200404301051.49859.jhb@FreeBSD.org> X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx cc: Julian Elischer cc: FreeBSD current users Subject: Re: mptable not showing all proccessors? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Apr 2004 14:51:36 -0000 On Thursday 29 April 2004 05:22 pm, Julian Elischer wrote: > I have an intel server motherboard that has 2 Xeom HTT processors. > > FreeBSD correctly finds 4 processors but mptable only shows the 2 > physical processors. > > I assume this means the BIOS is buggy, as Hyperthreading is turned on > in the BIOS and I assume it should have put all 4 in the table. > > Anyone seen anything like this? > anything I should worry about? > FreeBSD 4.8++ seems to work on it just fin and sees all 4 cpus.. > Would -current have any problems? I vaguely remember that -current > might trust the Bios tables a bit more.. MP Tables almost never show logical processors. -current does a better job as it uses the MADT which does list logical processors. -current's mptable code can be forced to assume that any logical processors are enabled (which is what 4.x does) via the 'MPTABLE_FORCE_HTT' kernel option. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org