From owner-freebsd-smp@FreeBSD.ORG Thu May 6 20:57:39 2010 Return-Path: Delivered-To: freebsd-smp@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0EDE61065674 for ; Thu, 6 May 2010 20:57:39 +0000 (UTC) (envelope-from bounces@nabble.com) Received: from kuber.nabble.com (kuber.nabble.com [216.139.236.158]) by mx1.freebsd.org (Postfix) with ESMTP id DD3A28FC0C for ; Thu, 6 May 2010 20:57:38 +0000 (UTC) Received: from isper.nabble.com ([192.168.236.156]) by kuber.nabble.com with esmtp (Exim 4.63) (envelope-from ) id 1OA88Y-0005Tp-6Q for freebsd-smp@freebsd.org; Thu, 06 May 2010 13:57:38 -0700 Message-ID: <28479447.post@talk.nabble.com> Date: Thu, 6 May 2010 13:57:38 -0700 (PDT) From: Hubert Tournier To: freebsd-smp@freebsd.org In-Reply-To: <28467645.post@talk.nabble.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Nabble-From: hubert@frbsd.org References: <28357071.post@talk.nabble.com> <4BD4727F.4060700@googlemail.com> <28359495.post@talk.nabble.com> <4BD563F7.4010203@googlemail.com> <201004260948.12730.jhb@freebsd.org> <28467645.post@talk.nabble.com> Subject: Re: Disabling HyperThreading? X-BeenThere: freebsd-smp@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD SMP implementation group List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 May 2010 20:57:39 -0000 Hello, Hubert Tournier wrote: > > I also see in the source code that the default is to enable HT cores: > static int hyperthreading_allowed = 1; > > So i will test a custom kernel with this disabled. > Well, it's not enough, i still have my 24 CPUs. I'll give a try to John's way of disabling CPUs, hoping to avoid disabling the wrong ones. Best regards, Hubert -- View this message in context: http://old.nabble.com/Disabling-HyperThreading--tp28357071p28479447.html Sent from the freebsd-smp mailing list archive at Nabble.com.