From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 21 May 2001 06:44:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 21 May 2001 06:44:26 -0400 Received: from sportingbet.gw.dircon.net ([195.157.147.30]:53768 "HELO sysadmin.sportingbet.com") by vger.kernel.org with SMTP id ; Mon, 21 May 2001 06:44:22 -0400 Date: Mon, 21 May 2001 11:42:21 +0100 From: Sean Hunter To: Sasi Peter Cc: linux-kernel@vger.kernel.org Subject: Re: Linux scalability? Message-ID: <20010521114221.B24919@dev.sportingbet.com> Mail-Followup-To: Sean Hunter , Sasi Peter , linux-kernel@vger.kernel.org In-Reply-To: <20010518091711.B26232@dev.sportingbet.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from sape@iq.rulez.org on Sat, May 19, 2001 at 10:31:01AM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Yup. The problem is that you're trying to measure scalability in performance of an i/o-bound task by comparing a machine with greater i/o resource but less processing power with one with greater processing but poorer i/o. Surprisingly enough, the one with the best i/o wins. This isn't really a fair comparison between the two platforms. If you put the same disk array on both machines and got the same results, then you'd have a point. My point was that in the real world having this configuration for a webserver is unlikely to be sensible at all. Sean On Sat, May 19, 2001 at 10:31:01AM +0200, Sasi Peter wrote: > On Fri, 18 May 2001, Sean Hunter wrote: > > > Why would you want to run a web server with 8 processors rather than four > > webservers with 2 each? > > As you might already know, after the interviews to Mingo I assumed, that a > major portion of the achievements was enabled by the 2.4 scalability > enhacements. That is why I wrote to LKML, to ask about the 2.4 > scalability, if anybody out there could tell us about the linux kernel's > scalability possibily compared to W2k scalability... > > -- > SaPE - Peter, Sasi - mailto:sape@sch.hu - http://sape.iq.rulez.org/ > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >