Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759042AbXLUXVf (ORCPT ); Fri, 21 Dec 2007 18:21:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754642AbXLUXV1 (ORCPT ); Fri, 21 Dec 2007 18:21:27 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:39121 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754479AbXLUXV1 (ORCPT ); Fri, 21 Dec 2007 18:21:27 -0500 Date: Sat, 22 Dec 2007 00:17:28 +0100 From: Ingo Molnar To: Linus Torvalds Cc: Christoph Lameter , Pekka Enberg , Steven Rostedt , LKML , Andrew Morton , Peter Zijlstra , Christoph Hellwig , "Rafael J. Wysocki" Subject: Re: Major regression on hackbench with SLUB (more numbers) Message-ID: <20071221231728.GA28008@elte.hu> References: <1197049846.1645.68.camel@localhost.localdomain> <20071211143336.GA17866@elte.hu> <20071221120908.GA15926@elte.hu> <84144f020712210944q3e0539f8vd8a249f69d456dc7@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1339 Lines: 33 * Linus Torvalds wrote: > And now, can the people who made the problem reports and complained > about SLUB please test the patch - the ball is now in your court! yep, and i ran a quick comparison test on a 2-core box with 3 kernels: [ best of 5 runs in a row which had a relative jitter of less than 10% ] MIN v2.6.24.slab v2.6.24.slub v2.6.24.slub.fix ---------------------------------------------------------- mmap: 429.00 402.00 ( -6%) 385.00 (-10%) select: 11.38 10.46 ( -8%) 11.41 ( 0%) proc-exec: 121.52 116.77 ( -3%) 120.77 ( 0%) proc-fork: 106.84 106.19 ( 0%) 107.92 ( 1%) syscall-open: 3.09 3.13 ( 1%) 3.25 ( 4%) hackbench-50: 2.85 3.47 ( 21%) 2.88 ( 1%) and the regression seems to be largely fixed! Not only is the hackbench one fixed, but mmap shows an above-noise improvement as well. Acked-by: Ingo Molnar And i hereby nominate Pekka as SLUB/SLAB co-maintainer and spokesperson ;-) Ingo -- 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/