From owner-freebsd-hackers@FreeBSD.ORG Fri Oct 24 06:44:56 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9530416A4B3 for ; Fri, 24 Oct 2003 06:44:56 -0700 (PDT) Received: from smtpproxy1.mitre.org (smtpproxy1.mitre.org [192.160.51.75]) by mx1.FreeBSD.org (Postfix) with ESMTP id A050143FE0 for ; Fri, 24 Oct 2003 06:44:52 -0700 (PDT) (envelope-from jandrese@mitre.org) Received: from avsrv1.mitre.org (avsrv1.mitre.org [129.83.20.58]) by smtpproxy1.mitre.org (8.12.10/8.12.8) with ESMTP id h9ODipbY016223; Fri, 24 Oct 2003 09:44:51 -0400 (EDT) Received: from MAILHUB2 (mailhub2.mitre.org [129.83.221.18]) by smtpsrv1.mitre.org (8.12.9/8.12.8) with ESMTP id h9ODioLJ007733; Fri, 24 Oct 2003 09:44:50 -0400 (EDT) Received: from mm112324-2k.mitre.org (128.29.3.41) by mailhub2.mitre.org with SMTP id 126283; Fri, 24 Oct 2003 09:44:47 -0400 Message-ID: <3F992CCE.2070608@mitre.org> Date: Fri, 24 Oct 2003 09:44:46 -0400 From: Jason Andresen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030612 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Q References: <20031022082953.GA69506@rot13.obsecurity.org> <1066816287.25609.34.camel@boxster.onthenet.com.au> <20031022095754.GA70026@rot13.obsecurity.org> <1066820436.25609.93.camel@boxster.onthenet.com.au> <20031022144043.GI55642@dan.emsphone.com> <20031022155058.GE3640@saboteur.dek.spc.org> <20031022204200.GC14012@splashground.de> <1066865808.42673.28.camel@boxster.onthenet.com.au> <20031023112353.GD14012@splashground.de> <1066910120.58538.15.camel@boxster.onthenet.com.au> <20031023130230.GA2916@stack.nl> <1066924375.58538.161.camel@boxster.onthenet.com.au> In-Reply-To: <1066924375.58538.161.camel@boxster.onthenet.com.au> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: Marc Olzheim cc: freebsd-hackers@freebsd.org Subject: Re: Some mmap observations compared to Linux 2.6/OpenBSD X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Oct 2003 13:44:56 -0000 Q wrote: > Good point, maybe I should have said "increasing" growth instead of > "linear" ;) It looked linear to me, however the constant factor was much smaller. In the real world, that is often good enough. The Linux 2.6 kernel looks like it has a constant time algorithm. -- \ |_ _|__ __|_ \ __| Jason Andresen jandrese@mitre.org |\/ | | | / _| Network and Distributed Systems Engineer _| _|___| _| _|_\___| Office: 703-883-7755