From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932348AbWFEA2E (ORCPT ); Sun, 4 Jun 2006 20:28:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932349AbWFEA2E (ORCPT ); Sun, 4 Jun 2006 20:28:04 -0400 Received: from smtp.ustc.edu.cn ([202.38.64.16]:31877 "HELO ustc.edu.cn") by vger.kernel.org with SMTP id S932348AbWFEA2B (ORCPT ); Sun, 4 Jun 2006 20:28:01 -0400 Message-ID: <349467272.31863@ustc.edu.cn> X-EYOUMAIL-SMTPAUTH: wfg@mail.ustc.edu.cn Date: Mon, 5 Jun 2006 08:28:07 +0800 From: Fengguang Wu To: Andrew Morton Cc: linux-kernel@vger.kernel.org Subject: readahead benchmark Message-ID: <20060605002807.GA4919@mail.ustc.edu.cn> Mail-Followup-To: Fengguang Wu , Andrew Morton , linux-kernel@vger.kernel.org References: <20060604135011.decdc7c9.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060604135011.decdc7c9.akpm@osdl.org> User-Agent: Mutt/1.5.11+cvs20060126 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jun 04, 2006 at 01:50:11PM -0700, Andrew Morton wrote: > readahead-kconfig-options.patch [...] > It's early days yet - needs heaps more performance testing. The results > from "Linux Portal" were discouraging. I found this mail from the lkml archive, did you happen to have more results? ------ Date: Mon, 29 May 2006 17:22:50 +0200 From: "Linux Portal" To: linux-kernel@vger.kernel.org Subject: The adaptive readahead patch benchmark There is an interesting (although simple) benchmark of Wu's adaptive readahead patchset (v12) together with graphs here: http://linux.inet.hr/adaptive_readahead_benchmark.html In that simple test it definitely looks promising (3x speedup).