From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265388AbTLHNMJ (ORCPT ); Mon, 8 Dec 2003 08:12:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265395AbTLHNMJ (ORCPT ); Mon, 8 Dec 2003 08:12:09 -0500 Received: from lindsey.linux-systeme.com ([62.241.33.80]:62468 "EHLO mx00.linux-systeme.com") by vger.kernel.org with ESMTP id S265388AbTLHNMG (ORCPT ); Mon, 8 Dec 2003 08:12:06 -0500 From: Marc-Christian Petersen Organization: Working Overloaded Linux Kernel To: Marcelo Tosatti , Mikael Johansson Subject: Re: RAID-0 read perf. decrease after 2.4.20 Date: Mon, 8 Dec 2003 14:11:04 +0100 User-Agent: KMail/1.5.4 Cc: linux-raid@vger.kernel.org, , , , Jens Axboe , References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200312081411.04057.m.c.p@wolk-project.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday 08 December 2003 13:47, Marcelo Tosatti wrote: Hi Marcelo, > 2.4.20-aa included rmap and some VM modifications most notably > "drop_behind()" logic which I believe should be the reason for the huge > read speedups. Can you please try it? Against 2.4.23. -aa tree never had -rmap :) ciao, Marc