From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757683AbYEHFWv (ORCPT ); Thu, 8 May 2008 01:22:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753309AbYEHFWm (ORCPT ); Thu, 8 May 2008 01:22:42 -0400 Received: from mga09.intel.com ([134.134.136.24]:58837 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753192AbYEHFWk (ORCPT ); Thu, 8 May 2008 01:22:40 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.27,453,1204531200"; d="scan'208";a="279101357" Subject: Re: volanoMark regression with kernel 2.6.26-rc1 From: "Zhang, Yanmin" To: Dhaval Giani Cc: Peter Zijlstra , LKML , Srivatsa Vaddagiri , Ingo Molnar In-Reply-To: <20080507174209.GB4424@linux.vnet.ibm.com> References: <1210039590.3453.18.camel@ymzhang> <20080507174209.GB4424@linux.vnet.ibm.com> Content-Type: text/plain Date: Thu, 08 May 2008 13:21:27 +0800 Message-Id: <1210224087.3453.107.camel@ymzhang> Mime-Version: 1.0 X-Mailer: Evolution 2.21.5 (2.21.5-2.fc9) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2008-05-07 at 23:12 +0530, Dhaval Giani wrote: > On Tue, May 06, 2008 at 10:06:30AM +0800, Zhang, Yanmin wrote: > > Comparing with 2.6.25, volanoMark has big regression with kernel 2.6.26-rc1. > > It's about 50% on my 8-core stoakley, 16-core tigerton, and Itanium Montecito. > > > > Just FYI, I am actually seeing 5 times performance on 2.6.26-rc1 > (I ran the benchmark twice before i sent out this mail and both > times I have have these numbers) What's the hardware/software configuration? And kernel .config?