From owner-freebsd-hackers Wed Aug 21 11:42: 5 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1215D37B400 for ; Wed, 21 Aug 2002 11:42:03 -0700 (PDT) Received: from mail.speakeasy.net (mail14.speakeasy.net [216.254.0.214]) by mx1.FreeBSD.org (Postfix) with ESMTP id AEDBE43E3B for ; Wed, 21 Aug 2002 11:42:02 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 11495 invoked from network); 21 Aug 2002 18:42:02 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail14.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 21 Aug 2002 18:42:02 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.5/8.12.5) with ESMTP id g7LIg0BQ018346; Wed, 21 Aug 2002 14:42:00 -0400 (EDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20020810160643.I38678-100000@carver.gumbysoft.com> Date: Wed, 21 Aug 2002 14:42:06 -0400 (EDT) From: John Baldwin To: Doug White Subject: RE: SMP P4 Xeons out there? Cc: hackers@freebsd.org Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 10-Aug-2002 Doug White wrote: > Hey folks, > > Anyone other there with multiprocessor P4 Xeon systems with Hyperthreading > enabled that are seeing 4 CPUs show up on boot? > > If you are, can you mail me the output of 'mptable'? > > It appears you need to enumerate CPUs out of ACPI if you want the logical > CPUs to show up. FreeBSD doesn't appear to support this (yet -- correct me > if I've misread the MP init code), but some people are seeing 4 CPUs > anyway. I'm curious if those systems are modifying the mptable for the > benefit of non-ACPI systems. Newer P4 Xeon's do enumerate all CPU's via the mptable. We use ACPI to enumerate CPU's for ia64 SMP, so at some point it could be backported if needed. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message