Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263430AbUCTOv1 (ORCPT ); Sat, 20 Mar 2004 09:51:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263432AbUCTOv1 (ORCPT ); Sat, 20 Mar 2004 09:51:27 -0500 Received: from holomorphy.com ([207.189.100.168]:26760 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S263430AbUCTOvW (ORCPT ); Sat, 20 Mar 2004 09:51:22 -0500 Date: Sat, 20 Mar 2004 06:51:11 -0800 From: William Lee Irwin III To: Andrea Arcangeli Cc: Nick Piggin , Andrew Morton , mjy@geizhals.at, linux-kernel@vger.kernel.org Subject: Re: CONFIG_PREEMPT and server workloads Message-ID: <20040320145111.GD2045@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Andrea Arcangeli , Nick Piggin , Andrew Morton , mjy@geizhals.at, linux-kernel@vger.kernel.org References: <40591EC1.1060204@geizhals.at> <20040318060358.GC29530@dualathlon.random> <20040318015004.227fddfb.akpm@osdl.org> <20040318145129.GA2246@dualathlon.random> <405A584B.40601@cyberone.com.au> <20040319050948.GN2045@holomorphy.com> <20040320121423.GA9009@dualathlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040320121423.GA9009@dualathlon.random> User-Agent: Mutt/1.5.5.1+cvs20040105i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1000 Lines: 21 On Thu, Mar 18, 2004 at 09:09:48PM -0800, William Lee Irwin III wrote: >> Someone really needs to get numbers on this stuff. On Sat, Mar 20, 2004 at 01:14:23PM +0100, Andrea Arcangeli wrote: > Takashi already did it and we know it doesn't reduce the maximum latency. I may have missed one of his posts where he gave the results from the RT test suite. I found a list of functions with some kind of numbers, though I didn't see a description of what those numbers were and was looking for something more detailed (e.g. the output of the RT instrumentation things he had with and without preempt). This is all mostly curiosity and sort of hoping this gets carried out vaguely scientifically anyway, so I'm not really arguing one way or the other. -- wli - 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/