Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757764AbXJZTeL (ORCPT ); Fri, 26 Oct 2007 15:34:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751111AbXJZTd5 (ORCPT ); Fri, 26 Oct 2007 15:33:57 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:37945 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751099AbXJZTd4 (ORCPT ); Fri, 26 Oct 2007 15:33:56 -0400 Date: Fri, 26 Oct 2007 21:33:40 +0200 From: Ingo Molnar To: Andrew Morton Cc: spamtrap@knobisoft.de, linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, wfg@mail.ustc.edu.cn, torvalds@linux-foundation.org, riel@redhat.com Subject: Re: 2.6.24-rc1: First impressions Message-ID: <20071026193339.GA21799@elte.hu> References: <796505.25770.qm@web32612.mail.mud.yahoo.com> <20071026152221.GA26619@elte.hu> <20071026122155.45ce72e7.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20071026122155.45ce72e7.akpm@linux-foundation.org> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1958 Lines: 48 * Andrew Morton wrote: > > > dd1 - copy 16 GB from /dev/zero to local FS > > > dd1-dir - same, but using O_DIRECT for output > > > dd2/dd2-dir - copy 2x7.6 GB in parallel from /dev/zero to local FS > > > dd3/dd3-dir - copy 3x5.2 GB in parallel from /dev/zero lo local FS > > > net1 - copy 5.2 GB from NFS3 share to local FS > > > mix3 - copy 3x5.2 GB from /dev/zero to local disk and two NFS3 shares > > > > > > I did the numbers for 2.6.19.2, 2.6.22.6 and 2.6.24-rc1. All units > > > are MB/sec. > > > > > > test 2.6.19.2 2.6.22.6 2.6.24.-rc1 > > > ---------------------------------------------------------------- > > > dd1 28 50 96 > > > dd1-dir 88 88 86 > > > dd2 2x16.5 2x11 2x44.5 > > > dd2-dir 2x44 2x44 2x43 > > > dd3 3x9.8 3x8.7 3x30 > > > dd3-dir 3x29.5 3x29.5 3x28.5 > > > net1 30-33 50-55 37-52 > > > mix3 17/32 25/50 96/35 (disk/combined-network) > > > > wow, really nice results! > > Those changes seem suspiciously large to me. I wonder if there's less > physical IO happening during the timed run, and correspondingly more > afterwards. so a final 'sync' should be added to the test too, and the time it takes factored into the bandwidth numbers? > > I think the MM should get out of deep-feature-freeze mode - there's > > tons of room to improve :-/ > > Kidding. We merge about 265 MM patches in 2.6.24-rc1: > > 482 files changed, 8071 insertions(+), 5142 deletions(-) impressive :) Ingo - 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/