Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761470AbXLNGRK (ORCPT ); Fri, 14 Dec 2007 01:17:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753166AbXLNGQ4 (ORCPT ); Fri, 14 Dec 2007 01:16:56 -0500 Received: from ms-smtp-05.nyroc.rr.com ([24.24.2.59]:44055 "EHLO ms-smtp-05.nyroc.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753162AbXLNGQz (ORCPT ); Fri, 14 Dec 2007 01:16:55 -0500 Date: Fri, 14 Dec 2007 01:15:54 -0500 (EST) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: Christoph Lameter cc: Ingo Molnar , LKML , Andrew Morton , Linus Torvalds , Peter Zijlstra , Christoph Hellwig Subject: Re: Major regression on hackbench with SLUB (more numbers) In-Reply-To: Message-ID: References: <1197049846.1645.68.camel@localhost.localdomain> <20071211143336.GA17866@elte.hu> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1224 Lines: 50 Christoph, Welcome back from your vacation! :-) On Thu, 13 Dec 2007, 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 > I booted back to slub with slub_min_order=9 on the 64way and you are indeed right about this. # tests/hackbench 90 Time: 2.109 # chrt -f 10 tests/hackbench 90 Time: 3.775 # tests/hackbench 90 Time: 1.583 # chrt -f 10 tests/hackbench 90 Time: 1.833 # tests/hackbench 90 Time: 1.601 # chrt -f 10 tests/hackbench 90 Time: 3.078 # tests/hackbench 90 Time: 1.321 # chrt -f 10 tests/hackbench 90 Time: 1.933 A flux between 1.321 and 3.775 (*)(the rt runs were higher). But still, good job at narrowing this down. Now the hard part. Figuring out a way that will be nice to all users. -- Steve (*) The previous runs (without the command line option) were 13 seconds or so. -- 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/