From owner-freebsd-questions@FreeBSD.ORG Wed Jan 12 05:21:20 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5FF7816A4CE for ; Wed, 12 Jan 2005 05:21:20 +0000 (GMT) Received: from smtp9.wanadoo.fr (smtp9.wanadoo.fr [193.252.22.22]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0D47C43D53 for ; Wed, 12 Jan 2005 05:21:20 +0000 (GMT) (envelope-from atkielski.anthony@wanadoo.fr) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf0907.wanadoo.fr (SMTP Server) with ESMTP id 455591C0014A for ; Wed, 12 Jan 2005 06:21:19 +0100 (CET) Received: from pix.atkielski.com (ASt-Lambert-111-2-1-3.w81-50.abo.wanadoo.fr [81.50.80.3]) by mwinf0907.wanadoo.fr (SMTP Server) with ESMTP id 2C11E1C00148 for ; Wed, 12 Jan 2005 06:21:19 +0100 (CET) Date: Wed, 12 Jan 2005 06:21:18 +0100 From: Anthony Atkielski X-Priority: 3 (Normal) Message-ID: <509984787.20050112062118@wanadoo.fr> To: freebsd-questions@freebsd.org In-Reply-To: <200501120511.j0C5BnjO084514@mail.cs.ait.ac.th> References: <35de0c30050111210235ea3060@mail.gmail.com> (message from Bryan Fullerton on Wed, 12 Jan 2005 00:02:37 -0500) <200501120511.j0C5BnjO084514@mail.cs.ait.ac.th> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Subject: Re: Hyperthreading hurts 5.3? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd-questions@freebsd.org List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Jan 2005 05:21:20 -0000 Olivier Nicole writes: ON> Maybe for the same reason you should better not use a non-SMP kernel ON> if you have 2 CPU in your box. Is a hyperthreading CPU identical to a second CPU from the software's standpoint? If not, what are the differences? -- Anthony