From owner-freebsd-current Mon Mar 3 11:30: 1 2003 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 0E09B37B401 for ; Mon, 3 Mar 2003 11:30:00 -0800 (PST) Received: from smtp.comcast.net (smtp.comcast.net [24.153.64.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 77FD043FCB for ; Mon, 3 Mar 2003 11:29:59 -0800 (PST) (envelope-from trish@bsdunix.net) Received: from femme.sapphite.org (pcp02268182pcs.longhl01.md.comcast.net [68.50.99.190]) by mtaout07.icomcast.net (iPlanet Messaging Server 5.2 HotFix 1.09 (built Jan 7 2003)) with ESMTP id <0HB6006IFU30GB@mtaout07.icomcast.net> for freebsd-current@FreeBSD.ORG; Mon, 03 Mar 2003 14:28:12 -0500 (EST) Received: from localhost (trish@localhost [127.0.0.1]) by femme.sapphite.org (8.12.6/8.12.6) with ESMTP id h23JSANv078304; Mon, 03 Mar 2003 14:28:11 -0500 (EST envelope-from trish@bsdunix.net) Date: Mon, 03 Mar 2003 14:28:10 -0500 (EST) From: Trish Lynch Subject: Re: hype(r)threading In-reply-to: <0bf901c2e18d$95bbb3e0$932a40c1@PHE> X-X-Sender: To: Petri Helenius Cc: freebsd-current@FreeBSD.ORG Message-id: <20030303142353.C830-100000@femme> MIME-version: 1.0 Content-type: TEXT/PLAIN; charset=X-UNKNOWN Content-transfer-encoding: QUOTED-PRINTABLE Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Mon, 3 Mar 2003, Petri Helenius wrote: > > I seem to want to quite the opposite what other people would like to happ= en, > we have a supermicro P4DPR board with two Xeon=B4s. Since lately the kern= el seems to > want to launch the virtual cores regardless of BIOS setting of HyperThrea= ding being > [Disabled]. > > Any ideas how to disable the cores since our workload is does not benefit= from > having more than two cores in a machine. > > Pete > Currently, AFAIK, there is no way to do this. Depending on what you are doing you can increase performance slightly by setting machdep.cpu_idle_hlt=3D1 -Trish -- Trish Lynch=09=09=09=09=09 trish@bsdunix.net Ecartis Core Team =09=09=09 trish@listmistress.org EFNet IRC Operator @ efnet.demon.co.uk=09=09 AilleCat@EFNet EFNet IRC Operator/SysAdmin @ irc.dkom.at Aille_AT@EFNet Key fingerprint =3D 781D 2B47 AA4B FC88 B919 0CD6 26B2 1D62 6FC1 FF16 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message