Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261681AbUAAXJ2 (ORCPT ); Thu, 1 Jan 2004 18:09:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261779AbUAAXJ2 (ORCPT ); Thu, 1 Jan 2004 18:09:28 -0500 Received: from mail3.bluewin.ch ([195.186.1.75]:16329 "EHLO mail3.bluewin.ch") by vger.kernel.org with ESMTP id S261681AbUAAXJ0 (ORCPT ); Thu, 1 Jan 2004 18:09:26 -0500 Date: Fri, 2 Jan 2004 00:09:12 +0100 From: Roger Luethi To: Jens Axboe Cc: Kernel Mailing List Subject: Re: 2.6.0 performance problems Message-ID: <20040101230911.GA28438@k3.hellgate.ch> Mail-Followup-To: Jens Axboe , Kernel Mailing List References: <20031230012551.GA6226@k3.hellgate.ch> <20031230132145.B32120@hexapodia.org> <20031230194051.GD22443@holomorphy.com> <20031230222403.GA8412@k3.hellgate.ch> <20031231101741.GA4378@k3.hellgate.ch> <20031231112119.GB3089@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031231112119.GB3089@suse.de> X-Operating-System: Linux 2.6.0-test11 on i686 X-GPG-Fingerprint: 92 F4 DC 20 57 46 7B 95 24 4E 9E E7 5A 54 DC 1B X-GPG: 1024/80E744BD wwwkeys.ch.pgp.net User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1547 Lines: 39 On Wed, 31 Dec 2003 12:21:19 +0100, Jens Axboe wrote: > the qsbench suckiness? Do you have numbers for 2.4.x and 2.6.1-rc with > the various io schedulers (it would be interesting to see stock, > elevator=deadline, and elevator=noop). For 2.6 AS comes out on top. It seems though that AS may be at least partially responsible for the exploding variance of run times for qsbench. I don't think we can compare 2.4 and 2.6 I/O schedulers for these loads. The io scheduler can do only so much if the VM evicts the wrong pages. Average, times for ten runs (in seconds, ordered). efax avg 2.4.23 228.8 227 227 228 229 229 229 229 230 230 230 2.6.0 noop 861.8 833 855 860 865 866 866 867 867 869 870 2.6.0 deadline 846.1 813 827 830 845 850 854 856 859 861 866 2.6.0 as 850.8 827 834 839 840 840 841 864 864 874 885 kbuild avg 2.4.23 140.4 116 118 124 125 132 150 153 157 161 168 2.6.0 noop 638.2 552 569 596 600 608 631 634 658 712 822 2.6.0 deadline 570.0 494 495 517 529 532 545 596 619 670 703 2.6.0 as 486.1 406 429 453 468 473 477 510 536 542 567 qsbench avg 2.4.23 223.8 219 220 221 223 223 223 223 225 230 231 2.6.0 noop 380.0 333 343 374 377 382 389 391 391 403 417 2.6.0 deadline 368.8 339 361 361 372 372 373 375 377 377 381 2.6.0 as 329.3 253 279 281 286 300 355 371 374 388 406 Roger - 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/