Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759593AbXLUXkt (ORCPT ); Fri, 21 Dec 2007 18:40:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753515AbXLUXkk (ORCPT ); Fri, 21 Dec 2007 18:40:40 -0500 Received: from rv-out-0910.google.com ([209.85.198.187]:64823 "EHLO rv-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755624AbXLUXki (ORCPT ); Fri, 21 Dec 2007 18:40:38 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references:x-google-sender-auth; b=wWetHYVbk4DBntq5/cyPBCPfZ+SS46zMCEIzArrNXrkGQKEGrVGrHaq7S7BHlVj7vUfARuZACDPNoRz1kmAoagyPWIi3WU5olo+1TKMTL1tCGY/uUm8c7Y0byLhJ4Qbro7NVvsy4L2G5x1vwjLI/RjTTyfObUix/kYodccpJogI= Message-ID: <84144f020712211540i33cbd11ke9fcd842980e5689@mail.gmail.com> Date: Sat, 22 Dec 2007 01:40:37 +0200 From: "Pekka Enberg" To: "Ingo Molnar" Subject: Re: Major regression on hackbench with SLUB (more numbers) Cc: "Linus Torvalds" , "Christoph Lameter" , "Steven Rostedt" , LKML , "Andrew Morton" , "Peter Zijlstra" , "Christoph Hellwig" , "Rafael J. Wysocki" In-Reply-To: <20071221231728.GA28008@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1197049846.1645.68.camel@localhost.localdomain> <20071211143336.GA17866@elte.hu> <20071221120908.GA15926@elte.hu> <84144f020712210944q3e0539f8vd8a249f69d456dc7@mail.gmail.com> <20071221231728.GA28008@elte.hu> X-Google-Sender-Auth: 5971ee2fbb867dc4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1545 Lines: 38 Hi, On Dec 22, 2007 1:17 AM, Ingo Molnar wrote: > 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 I thought it might be a bug but couldn't figure it out. The patch looks good to me too, Christoph. Reviewed-by: Pekka Enberg On Dec 22, 2007 1:17 AM, Ingo Molnar wrote: > And i hereby nominate Pekka as SLUB/SLAB co-maintainer and spokesperson > ;-) Heh, thanks, but grep me from MAINTAINERS some day, Ingo :-). Pekka -- 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/