From owner-freebsd-current Fri Jan 31 12:48:39 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 6381637B401; Fri, 31 Jan 2003 12:48:38 -0800 (PST) Received: from rwcrmhc53.attbi.com (rwcrmhc53.attbi.com [204.127.198.39]) by mx1.FreeBSD.org (Postfix) with ESMTP id 07D7D43FB9; Fri, 31 Jan 2003 12:48:38 -0800 (PST) (envelope-from julian@elischer.org) Received: from interjet.elischer.org (12-232-168-4.client.attbi.com[12.232.168.4]) by rwcrmhc53.attbi.com (rwcrmhc53) with ESMTP id <20030131204836053003mvuje>; Fri, 31 Jan 2003 20:48:37 +0000 Received: from localhost (localhost.elischer.org [127.0.0.1]) by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id MAA46619; Fri, 31 Jan 2003 12:48:35 -0800 (PST) Date: Fri, 31 Jan 2003 12:48:34 -0800 (PST) From: Julian Elischer To: John Baldwin Cc: leafy , freebsd-current@FreeBSD.ORG Subject: Re: Hyperthreading and machdep.cpu_idle_hlt In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII 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 Fri, 31 Jan 2003, John Baldwin wrote: > > On 31-Jan-2003 leafy wrote: > > On Fri, Jan 31, 2003 at 01:45:56PM -0500, Trish Lynch wrote: > >> I have the .dat's for you, unfortunately, the output is different, so > >> you'll have to modify the .cfg for gnuplot :) > >> > >> -Trish > > I have HTT for my CPU, is there any "hack" to the BIOS to enable HyperThreading? > > Having HTT does _not_ mean you actually have multiple cores in your physical CPU. > You will see a separate line in your dmesg giving the number of cores per CPU > if you do. The BIOS really has nothing to do with this, it all comes from > registers returned from the CPUID instruction. do you need an SMP kernel to see this? > > -- > > 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-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message