From: =?ISO-8859-1?Q?C=E9dric_Villemain?= Subject: Re: 3.2 and 3.1 filesystem scalability measurements Date: Mon, 30 Jan 2012 16:36:12 +0100 Message-ID: References: <4F261807.2060108@hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Ext4 Developers List , linux-fsdevel@vger.kernel.org To: Eric Whitney Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:65374 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752916Ab2A3Pgd convert rfc822-to-8bit (ORCPT ); Mon, 30 Jan 2012 10:36:33 -0500 In-Reply-To: <4F261807.2060108@hp.com> Sender: linux-ext4-owner@vger.kernel.org List-ID: Le 30 janvier 2012 05:09, Eric Whitney a =E9crit = : > I've posted the results of some 3.2 and 3.1 ext4 scalability measurem= ents > and comparisons on a 48 core x86-64 server at: > > http://free.linux.hp.com/~enw/ext4/3.2 > > This includes throughput and CPU efficiency graphs for five simple > workloads, the raw data for same, plus lockstats on ext4 filesystems = with > and without journals. =A0The data have been useful in improving ext4 > scalability as a function of core and thread count in the past. > > For reference, ext3, xfs, and btrfs data are also included. interesting to have all of them, yes. > > The most notable improvement in 3.2 is a big scalability gain for jou= rnaled > ext4 when running the large_file_creates workload. =A0This bisects cl= eanly to > Wu Fengguang's IO-less balance_dirty_pages() patch which was included= in the > 3.2 merge window. > > (Please note that the test system's hardware and firmware configurati= on has > changed since my last posting, so this data set cannot be directly co= mpared > with my older sets.) > > Thanks, > Eric > > -- > To unsubscribe from this list: send the line "unsubscribe linux-fsdev= el" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html --=20 C=E9dric Villemain +33 (0)6 20 30 22 52 http://2ndQuadrant.fr/ PostgreSQL: Support 24x7 - D=E9veloppement, Expertise et Formation -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html