From owner-freebsd-smp Thu Mar 14 12:24:17 2002 Delivered-To: freebsd-smp@freebsd.org Received: from mailhub.yumyumyum.org (dsl092-171-091.wdc1.dsl.speakeasy.net [66.92.171.91]) by hub.freebsd.org (Postfix) with SMTP id B6FFB37B416 for ; Thu, 14 Mar 2002 12:24:13 -0800 (PST) Received: (qmail 20172 invoked from network); 14 Mar 2002 20:24:00 -0000 Received: from dsl092-171-091.wdc1.dsl.speakeasy.net (66.92.171.91) by dsl092-171-091.wdc1.dsl.speakeasy.net with SMTP; 14 Mar 2002 20:24:00 -0000 Date: Thu, 14 Mar 2002 15:24:00 -0500 (EST) From: Kenneth Culver To: Steve Wingate Cc: freebsd-smp@FreeBSD.ORG Subject: Re: Intel Xeon hyperthreading In-Reply-To: <008c01c1cb92$c62a28c0$0501a8c0@VELOSYSTEMS.NET> Message-ID: <20020314152326.H20147-100000@alpha.yumyumyum.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org I don't know if anyone is working on that, but from what I could tell, in a lot of cases, enabling the hyperthreading actually *decreased* performance of a lot of multithreaded and single threaded apps. Ken On Thu, 14 Mar 2002, Steve Wingate wrote: > Has anyone testing Intel Xeon hyperthreading on FreeBSD? I'm building a Dual > Xeon box and I was curious if FreeBSD would see that as two processors or > four. TIA. > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message