From owner-freebsd-hackers@FreeBSD.ORG Thu Oct 23 04:23:57 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 BA48B16A4BF for ; Thu, 23 Oct 2003 04:23:57 -0700 (PDT) Received: from paladin.fortunaty.net (fortunaty.net [217.160.129.175]) by mx1.FreeBSD.org (Postfix) with SMTP id 4CB9043F75 for ; Thu, 23 Oct 2003 04:23:54 -0700 (PDT) (envelope-from ah@paladin.fortunaty.net) Received: (qmail 30728 invoked by uid 501); 23 Oct 2003 11:23:53 -0000 Date: Thu, 23 Oct 2003 13:23:53 +0200 From: Andy To: Q Message-ID: <20031023112353.GD14012@splashground.de> Mail-Followup-To: Q , freebsd-hackers@freebsd.org References: <1066789354.21430.39.camel@boxster.onthenet.com.au> <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> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1066865808.42673.28.camel@boxster.onthenet.com.au> X-Addicted: yeah X-License: BSD User-Agent: Mutt/1.5.4i 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: Thu, 23 Oct 2003 11:23:57 -0000 On Thu, Oct 23, 2003 at 09:36:48AM +1000, Q wrote: > This is interesting, and demonstrates what I have been seeing, however > OpenBSD obviously has other issues with it's mmap implementation > entirely separate from this discussion. Indeed, but also note the OpenBSD graph¹ is actually two graphs, one O(n) and One O(1). aha ¹ http://bulk.fefe.de/scalability/mmap.png