From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751790AbWFAFvU (ORCPT ); Thu, 1 Jun 2006 01:51:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751796AbWFAFvU (ORCPT ); Thu, 1 Jun 2006 01:51:20 -0400 Received: from smtp.ustc.edu.cn ([202.38.64.16]:63443 "HELO ustc.edu.cn") by vger.kernel.org with SMTP id S1751790AbWFAFvT (ORCPT ); Thu, 1 Jun 2006 01:51:19 -0400 Message-ID: <349141076.14929@ustc.edu.cn> X-EYOUMAIL-SMTPAUTH: wfg@mail.ustc.edu.cn Date: Thu, 1 Jun 2006 13:51:43 +0800 From: Fengguang Wu To: Voluspa Cc: Valdis.Kletnieks@vt.edu, linux-kernel@vger.kernel.org Subject: Re: Adaptive Readahead V14 - statistics question... Message-ID: <20060601055143.GA5216@mail.ustc.edu.cn> Mail-Followup-To: Fengguang Wu , Voluspa , Valdis.Kletnieks@vt.edu, linux-kernel@vger.kernel.org References: <20060530053631.57899084.lista1@comhem.se> <200605301649.k4UGnooZ004266@turing-police.cc.vt.edu> <20060531235021.41a58425.lista1@comhem.se> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060531235021.41a58425.lista1@comhem.se> User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 31, 2006 at 11:50:21PM +0200, Voluspa wrote: > _Massive READ_ > > [/usr had some 490000 files] > > "cd /usr ; time find . -type f -exec md5sum {} \;" > > 2.6.17-rc5 ------- 2.6.17-rc5-ar > > real 21m21.009s -- 21m37.663s > user 3m20.784s -- 3m20.701s > sys 6m34.261s -- 6m41.735s > > I had planned to run this at least three times, but didn't realize I had > 12 compiled kernel trees and 3 uncompiled there... So, a one-shot had to > do. But it's still significant. Sorry, it is a known regression. I'd like to fix it in the next release. Thanks, Wu