From owner-freebsd-hackers@FreeBSD.ORG Thu Oct 23 04:55:42 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 F129E16A4B3 for ; Thu, 23 Oct 2003 04:55:42 -0700 (PDT) Received: from smtp018.mail.yahoo.com (smtp018.mail.yahoo.com [216.136.174.115]) by mx1.FreeBSD.org (Postfix) with SMTP id 2ED9443F93 for ; Thu, 23 Oct 2003 04:55:42 -0700 (PDT) (envelope-from q_dolan@yahoo.com.au) Received: from q.onthenet.com.au (HELO ?192.168.100.154?) (q?dolan@203.10.89.214 with plain) by smtp.mail.vip.sc5.yahoo.com with SMTP; 23 Oct 2003 11:55:33 -0000 From: Q To: Andy In-Reply-To: <20031023112353.GD14012@splashground.de> 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> <20031023112353.GD14012@splashground.de> Message-Id: <1066910120.58538.15.camel@boxster.onthenet.com.au> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.5 Date: Thu, 23 Oct 2003 21:55:21 +1000 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.1 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 11:55:43 -0000 I beg to differ. It might show linear growth, but the OpenBSD graph is definitely not O(n). Seeya...Q On Thu, 2003-10-23 at 21:23, Andy wrote: > 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