From owner-freebsd-ia64@FreeBSD.ORG Tue Nov 17 11:31:46 2009 Return-Path: Delivered-To: freebsd-ia64@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 946F9106566B for ; Tue, 17 Nov 2009 11:31:46 +0000 (UTC) (envelope-from mexas@bristol.ac.uk) Received: from dirg.bris.ac.uk (dirg.bris.ac.uk [137.222.10.102]) by mx1.freebsd.org (Postfix) with ESMTP id 2EDE78FC13 for ; Tue, 17 Nov 2009 11:31:45 +0000 (UTC) Received: from seis.bris.ac.uk ([137.222.10.93]) by dirg.bris.ac.uk with esmtp (Exim 4.69) (envelope-from ) id 1NAMHI-0006Sm-PS for freebsd-ia64@freebsd.org; Tue, 17 Nov 2009 11:31:41 +0000 Received: from mech-cluster241.men.bris.ac.uk ([137.222.187.241]) by seis.bris.ac.uk with esmtp (Exim 4.67) (envelope-from ) id 1NAMHI-0007H1-3d for freebsd-ia64@freebsd.org; Tue, 17 Nov 2009 11:31:20 +0000 Received: from mech-cluster241.men.bris.ac.uk (localhost [127.0.0.1]) by mech-cluster241.men.bris.ac.uk (8.14.3/8.14.3) with ESMTP id nAHBVJcL091611 for ; Tue, 17 Nov 2009 11:31:19 GMT (envelope-from mexas@bristol.ac.uk) Received: (from mexas@localhost) by mech-cluster241.men.bris.ac.uk (8.14.3/8.14.3/Submit) id nAHBVJua091610 for freebsd-ia64@freebsd.org; Tue, 17 Nov 2009 11:31:19 GMT (envelope-from mexas@bristol.ac.uk) X-Authentication-Warning: mech-cluster241.men.bris.ac.uk: mexas set sender to mexas@bristol.ac.uk using -f Date: Tue, 17 Nov 2009 11:31:19 +0000 From: Anton Shterenlikht To: freebsd-ia64@freebsd.org Message-ID: <20091117113119.GA91601@mech-cluster241.men.bris.ac.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) X-Spam-Score: -1.5 X-Spam-Level: - Subject: hyperthreading ? X-BeenThere: freebsd-ia64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the IA-64 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Nov 2009 11:31:46 -0000 Has anybody tried hyperthreading on ia64 FBSD? I know that on ia64 VMS effects of hyperthreading are very application dependent. In some cases there is a significant speed-up, in others the apps are running slower. many thanks anton -- Anton Shterenlikht Room 2.6, Queen's Building Mech Eng Dept Bristol University University Walk, Bristol BS8 1TR, UK Tel: +44 (0)117 331 5944 Fax: +44 (0)117 929 4423