Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752788AbZKEHDX (ORCPT ); Thu, 5 Nov 2009 02:03:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751926AbZKEHDW (ORCPT ); Thu, 5 Nov 2009 02:03:22 -0500 Received: from mail.gmx.net ([213.165.64.20]:56941 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751780AbZKEHDV (ORCPT ); Thu, 5 Nov 2009 02:03:21 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX19nLV4TgFFnKTH4nHkX3ARTzE8HQEX6bcrOmOJq2n mAbuKm41iI6b/X Subject: Re: UDP-U stream performance regression on 32-rc1 kernel From: Mike Galbraith To: "Zhang, Yanmin" Cc: Ingo Molnar , alex.shi@intel.com, linux-kernel@vger.kernel.org, Peter Zijlstra In-Reply-To: <1257398417.6401.27.camel@marge.simson.net> References: <1257220036.3819.193.camel@alexs-hp.sh.intel.com> <1257222791.16282.46.camel@ymzhang> <20091103174531.GA14747@elte.hu> <1257299745.16282.49.camel@ymzhang> <1257336461.16163.18.camel@marge.simson.net> <1257387645.16282.66.camel@ymzhang> <1257398417.6401.27.camel@marge.simson.net> Content-Type: text/plain Date: Thu, 05 Nov 2009 08:03:18 +0100 Message-Id: <1257404598.6406.11.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.5600000000000001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1919 Lines: 47 On Thu, 2009-11-05 at 06:20 +0100, Mike Galbraith wrote: > On Thu, 2009-11-05 at 10:20 +0800, Zhang, Yanmin wrote: > > On Wed, 2009-11-04 at 13:07 +0100, Mike Galbraith wrote: > > > > Can you try the below, and send me > > I tested it on Nehalem machine against the latest tips kernel. netperf loopback > > result is good and regression disappears. > > Excellent. Ingo has picked up a version in tip (1b9508f) which has zero > negative effect on my x264 testcase, and is a win for mysql+oltp through > the whole test spectrum. As that may (dunno, Ingo?) now be considered a > regression fix, ie candidate for 32.final, testing that it does no harm > to your big machines would be a good thing. (pretty please?:) Egad. Size XXL difference on my cheap Q6600 box git v2.6.32-rc6-26-g91d3f9b Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 65536 4096 60.00 7793073 0 4256.06 65536 60.00 7780487 4249.18 git v2.6.32-rc6-26-g91d3f9b + 1b9508f Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 65536 4096 60.00 15133547 0 8264.93 65536 60.00 15131466 8263.80 tip v2.6.32-rc6-1796-gd995f1d Socket Message Elapsed Messages Size Size Time Okay Errors Throughput bytes bytes secs # # 10^6bits/sec 65536 4096 60.00 13998562 0 7645.08 65536 60.00 13986112 7638.28 (uhoh, tinker time.) -Mike -- 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/