Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755567AbXLURo2 (ORCPT ); Fri, 21 Dec 2007 12:44:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752234AbXLURoU (ORCPT ); Fri, 21 Dec 2007 12:44:20 -0500 Received: from py-out-1112.google.com ([64.233.166.179]:24145 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751402AbXLURoT (ORCPT ); Fri, 21 Dec 2007 12:44:19 -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=A6CebSz7l3sRF08OwcyGxsDSW5PfxUfTyICyyljd2Fed27oPJUa0/T0ltU4zVzPMgVBZqYXq5cFK6UP8tGFDM8bL1EfViqqWDSUk/941ZXH+0STf0ZD5PB85QR5lE8YPppf1EUFnQRpUcbMc891NP+x1qPob1VRxYTE42BIFWZI= Message-ID: <84144f020712210944q3e0539f8vd8a249f69d456dc7@mail.gmail.com> Date: Fri, 21 Dec 2007 19:44:12 +0200 From: "Pekka Enberg" To: "Ingo Molnar" Subject: Re: Major regression on hackbench with SLUB (more numbers) Cc: "Christoph Lameter" , "Steven Rostedt" , LKML , "Andrew Morton" , "Linus Torvalds" , "Peter Zijlstra" , "Christoph Hellwig" , "Rafael J. Wysocki" In-Reply-To: <20071221120908.GA15926@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> X-Google-Sender-Auth: 0235951824e0345b Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 984 Lines: 25 Hi, Christoph Lameter wrote: > > In an extreme case (boot with slub_min_order=9 to get huge page sized > > slabs) SLUB can win against SLAB: > > > > N=10 Time: 0.338 Minimally faster > > N=20 Time: 0.560 10% faster > > N=50 Time: 1.353 15% faster On Dec 21, 2007 2:09 PM, Ingo Molnar wrote: > what's up with this regression? There's been absolutely no activity > about it in the last 8 days: upstream still regresses, -mm still > regresses and there are no patches posted for testing. Christoph, did you see Steven's oprofile results for the hackbench runs (http://lkml.org/lkml/2007/12/8/198)? Any ideas why we're hitting add_partial like crazy? 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/