From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261159AbVFNJx0 (ORCPT ); Tue, 14 Jun 2005 05:53:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261168AbVFNJx0 (ORCPT ); Tue, 14 Jun 2005 05:53:26 -0400 Received: from smtp207.mail.sc5.yahoo.com ([216.136.129.97]:53899 "HELO smtp207.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S261159AbVFNJxW (ORCPT ); Tue, 14 Jun 2005 05:53:22 -0400 Message-ID: <42AEA90A.4010004@yahoo.com.au> Date: Tue, 14 Jun 2005 19:53:14 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050324 Debian/1.7.6-1 X-Accept-Language: en MIME-Version: 1.0 To: yang.yi@bmrtech.com CC: LKML , China Performance Team Subject: Re: 2.6 kernel series have noticeable performance regression, URLs References: <1118739967.10339.1571.camel@montavista2> In-Reply-To: <1118739967.10339.1571.camel@montavista2> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org yangyi wrote: > Hi, all > > Because of format problem, the previous articles are very hard to read, > now, I can provide a ftp server for downloading those test results. > Please use gedit to read it. > fork/exec/sh regressions will be mostly due to the unfortunate 4level page tables regressions which have been fixed after 2.6.11. Also, on the SMP machine, you should bind the entire lmbench test to just one of the CPUs, because changes to SMP balancing can have disproportionate or unrealistic changes. It would be good if you could compare again with the latest 2.6.12 -git release. Thanks, Nick -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com