Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753847AbYGaQGX (ORCPT ); Thu, 31 Jul 2008 12:06:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750907AbYGaQGO (ORCPT ); Thu, 31 Jul 2008 12:06:14 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:50236 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750887AbYGaQGO (ORCPT ); Thu, 31 Jul 2008 12:06:14 -0400 Message-ID: <4891E2BF.4090304@linux-foundation.org> Date: Thu, 31 Jul 2008 11:05:19 -0500 From: Christoph Lameter User-Agent: Thunderbird 2.0.0.16 (Windows/20080708) MIME-Version: 1.0 To: Andi Kleen CC: Matt Mackall , Linus Torvalds , Pekka J Enberg , Christoph Lameter , Ingo Molnar , Hugh Dickins , Peter Zijlstra , Linux Kernel Mailing List , vegard.nossum@gmail.com, hannes@saeurebad.de, matthew@wil.cx Subject: Re: [RFC PATCH] greatly reduce SLOB external fragmentation References: <1199919548.6245.74.camel@cinder.waste.org> <1217466583.18911.226.camel@calx> <20080731141134.GP23938@one.firstfloor.org> <4891D979.6090802@linux-foundation.org> <20080731160320.GQ23938@one.firstfloor.org> In-Reply-To: <20080731160320.GQ23938@one.firstfloor.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1109 Lines: 20 Andi Kleen wrote: > On Thu, Jul 31, 2008 at 10:25:45AM -0500, Christoph Lameter wrote: >> Andi Kleen wrote: >>>> Finally getting rid of SLAB is a much trickier proposition because SLUB >>>> still loses in a few important corner cases. >>> The big issue is that we haven't really made much progress on at least >>> some of these test cases (like the database benchmarks) for quite some >>> time (and that wasn't for a lack of trying) :-/ Might be a fundamental >>> problem. >> It would be good to have more of these benchmark regressions than just TPC which requires a database setup etc etc. Preferably something that is easily runnable by everyone. > > AFAIK willy had a small test case for at least one of them. He is developing a scsi performance test program that showed a regression but it was proprietary last time I heard of it. Maybe its now available? -- 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/