Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754002AbYANJle (ORCPT ); Mon, 14 Jan 2008 04:41:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754118AbYANJlG (ORCPT ); Mon, 14 Jan 2008 04:41:06 -0500 Received: from mga05.intel.com ([192.55.52.89]:19409 "EHLO fmsmga101.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753999AbYANJlD (ORCPT ); Mon, 14 Jan 2008 04:41:03 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.24,281,1196668800"; d="scan'208";a="500117591" Subject: Re: Netperf TCP_RR(loopback) 10% regression in 2.6.24-rc6, comparing with 2.6.22 From: "Zhang, Yanmin" To: Ilpo =?ISO-8859-1?Q?J=E4rvinen?= Cc: LKML , Netdev In-Reply-To: References: <1199871330.3298.132.camel@ymzhang> <1200043854.3265.24.camel@ymzhang> Content-Type: text/plain; charset=utf-8 Date: Mon, 14 Jan 2008 17:38:36 +0800 Message-Id: <1200303516.3151.30.camel@ymzhang> Mime-Version: 1.0 X-Mailer: Evolution 2.9.2 (2.9.2-2.fc7) Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1309 Lines: 37 On Mon, 2008-01-14 at 11:21 +0200, Ilpo J?rvinen wrote: > On Mon, 14 Jan 2008, Ilpo J?rvinen wrote: > > > On Fri, 11 Jan 2008, Zhang, Yanmin wrote: > > > > > On Wed, 2008-01-09 at 17:35 +0800, Zhang, Yanmin wrote: > > > > > > > > As a matter of fact, 2.6.23 has about 6% regression and 2.6.24-rc's > > > > regression is between 16%~11%. > > > > > > > > I tried to use bisect to locate the bad patch between 2.6.22 and 2.6.23-rc1, > > > > but the bisected kernel wasn't stable and went crazy. > > > > TCP work between that is very much non-existing. > > I _really_ meant 2.6.22 - 2.6.23-rc1, not 2.6.24-rc1 in case you had a > typo I did bisect 2.6.22 - 2.6.23-rc1. I also tested it on the latest 2.6.24-rc. > there which is not that uncommon while typing kernel versions... :-) Thanks. I will retry bisect and bind the server/client to the same logical processor, where I hope the result is stable this time when bisecting. Manual testing showed there is still same or more regression if I bind the processes on the same cpu. Thanks a lot! -yanmin -- 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/