Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 14 Jan 2002 06:40:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 14 Jan 2002 06:40:14 -0500 Received: from penguin.e-mind.com ([195.223.140.120]:4632 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Mon, 14 Jan 2002 06:39:56 -0500 Date: Mon, 14 Jan 2002 12:39:42 +0100 From: Andrea Arcangeli To: Robert Love Cc: jogi@planetzork.ping.de, Andrew Morton , Ed Sweetman , yodaiken@fsmlabs.com, Alan Cox , nigel@nrg.org, Rob Landley , linux-kernel@vger.kernel.org Subject: Re: [2.4.17/18pre] VM and swap - it's really unusable Message-ID: <20020114123942.C10227@athlon.random> In-Reply-To: <1010781207.819.27.camel@phantasy> <20020112121315.B1482@inspiron.school.suse.de> <20020112160714.A10847@planetzork.spacenet> <20020112095209.A5735@hq.fsmlabs.com> <20020112180016.T1482@inspiron.school.suse.de> <005301c19b9b$6acc61e0$0501a8c0@psuedogod> <3C409B2D.DB95D659@zip.com.au> <20020113184249.A15955@planetzork.spacenet> <1010946178.11848.14.camel@phantasy> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.3.12i In-Reply-To: <1010946178.11848.14.camel@phantasy>; from rml@tech9.net on Sun, Jan 13, 2002 at 01:22:57PM -0500 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 13, 2002 at 01:22:57PM -0500, Robert Love wrote: > On Sun, 2002-01-13 at 12:42, jogi@planetzork.ping.de wrote: > > > 13-pre5aa1 18-pre2aa2 18-pre3 18-pre3s 18-pre3sp 18-pre3minill > > j100: 6:59.79 78% 7:07.62 76% * 6:39.55 81% 6:24.79 83% * > > j100: 7:03.39 77% 8:10.04 66% * 8:07.13 66% 6:21.23 83% * > > j100: 6:40.40 81% 7:43.15 70% * 6:37.46 81% 6:03.68 87% * > > j100: 7:45.12 70% 7:11.59 75% * 7:14.46 74% 6:06.98 87% * > > j100: 6:56.71 79% 7:36.12 71% * 6:26.59 83% 6:11.30 86% * > > > > j75: 6:22.33 85% 6:42.50 81% 6:48.83 80% 6:01.61 89% 5:42.66 93% 7:07.56 77% > > j75: 6:41.47 81% 7:19.79 74% 6:49.43 79% 5:59.82 89% 6:00.83 88% 7:17.15 74% > > j75: 6:10.32 88% 6:44.98 80% 7:01.01 77% 6:02.99 88% 5:48.00 91% 6:47.48 80% > > j75: 6:28.55 84% 6:44.21 80% 9:33.78 57% 6:19.83 85% 5:49.07 91% 6:34.02 83% > > j75: 6:17.15 86% 6:46.58 80% 7:24.52 73% 6:23.50 84% 5:58.06 88% 7:01.39 77% > > Again, preempt seems to reign supreme. Where is all the information those comparison are totally flawed. There's nothing to compare in there. minill misses the O(1) scheduler, and -aa has faster vm etc... there's absolutely nothing to compare in the above numbers, all variables changes at the same time. I'm amazed I've to say this, but in short: 1) to compare minill with preempt, apply both patches to 18-pre3, as the only patch applied (no O(1) in the way of preempt!!!!) 2) to compare -aa with preempt, apply -preempt on top of -aa and see what difference it makes If you don't follow exactly those simple rules you will change an huge amount of variables at the same time, and it will be again impossible to make any comparison or deduction from the numbers. Andrea - 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/