From owner-freebsd-hackers Wed Jul 31 12:23:42 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 89D2637B405 for ; Wed, 31 Jul 2002 12:23:38 -0700 (PDT) Received: from mail.speakeasy.net (mail17.speakeasy.net [216.254.0.217]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2507043E65 for ; Wed, 31 Jul 2002 12:23:38 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: (qmail 28841 invoked from network); 31 Jul 2002 19:23:36 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail17.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 31 Jul 2002 19:23:36 -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 g6VJNZuR058262; Wed, 31 Jul 2002 15:23:35 -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: <20020731141839.U54035-100000@dallben> Date: Wed, 31 Jul 2002 15:23:36 -0400 (EDT) From: John Baldwin To: "Brandon D. Valentine" Subject: RE: SMP problem on E7500 chipset Cc: FreeBSD-Hackers 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 31-Jul-2002 Brandon D. Valentine wrote: > On Wed, 31 Jul 2002 igor_dorovskoy@agilent.com wrote: > >> Looks like you do have hyper threading support on in your BIOS. >> Turn it off to disable virtual CPU's in your Xeons > > Incidentally, anyone working on Intel P4 hyperthreading support? We already support it back to 3.0, though not necessarily in the most efficient manner. 5.0 will handle hyperthreading slightly better than 3.x and 4.x, but I expect that real support (as in, schedule threads onto CPU's more sanely so we balance load on physical processors) will be a 6.0 feature. -- 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