From owner-freebsd-stable@FreeBSD.ORG Tue May 24 21:00:40 2005 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DD87D16A41C for ; Tue, 24 May 2005 21:00:40 +0000 (GMT) (envelope-from mkb@incubus.de) Received: from luzifer.incubus.de (incubus.de [80.237.207.83]) by mx1.FreeBSD.org (Postfix) with ESMTP id 81E0643D1D for ; Tue, 24 May 2005 21:00:40 +0000 (GMT) (envelope-from mkb@incubus.de) Received: from drjekyll.mkbuelow.net (p54AAEA60.dip.t-dialin.net [84.170.234.96]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by luzifer.incubus.de (Postfix) with ESMTP id 9A6AB2F20D; Tue, 24 May 2005 23:00:39 +0200 (CEST) Received: from [IPv6:::1] (localhost.mkbuelow.net [IPv6:::1]) by drjekyll.mkbuelow.net (8.13.3/8.13.3) with ESMTP id j4OL2VKA011970; Tue, 24 May 2005 23:02:31 +0200 (CEST) (envelope-from mkb@incubus.de) Message-ID: <42939667.6080503@incubus.de> Date: Tue, 24 May 2005 23:02:31 +0200 From: Matthias Buelow User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050509) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Bohdan Horst References: <20050524193117.GA35326@aristo> <20050524193707.GA11906@xor.obsecurity.org> <20050524201701.GB35326@aristo> <20050524202118.GB28257@xor.obsecurity.org> <20050524205609.GC35326@aristo> In-Reply-To: <20050524205609.GC35326@aristo> X-Enigmail-Version: 0.91.0.0 OpenPGP: id=6FF22C9F; url=http://www.mkbuelow.net/mkbkeys Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-stable@freebsd.org, Kris Kennaway Subject: Re: Performance of 4.x vs 5.x (nbench results) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 May 2005 21:00:41 -0000 Bohdan Horst wrote: > (5.4O == 4.11 binary on 5.4R) > almost identical speed :) Well, that's hardly surprising.. short of minimizing the number of page faults and avoiding TLB/cache shootdowns, what can the OS do to speed up the CPU pipeline? The nbench program doesn't benchmark any OS functions at all (except for loading time). mkb.