From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261871AbVFPWrE (ORCPT ); Thu, 16 Jun 2005 18:47:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261849AbVFPWoM (ORCPT ); Thu, 16 Jun 2005 18:44:12 -0400 Received: from holomorphy.com ([66.93.40.71]:13544 "EHLO holomorphy.com") by vger.kernel.org with ESMTP id S261871AbVFPWmn (ORCPT ); Thu, 16 Jun 2005 18:42:43 -0400 Date: Thu, 16 Jun 2005 15:42:30 -0700 From: William Lee Irwin III To: Badari Pulavarty Cc: Andrew Morton , Linux Kernel Mailing List , linux-mm@kvack.org Subject: Re: 2.6.12-rc6-mm1 & 2K lun testing Message-ID: <20050616224230.GD3913@holomorphy.com> References: <1118856977.4301.406.camel@dyn9047017072.beaverton.ibm.com> <20050616002451.01f7e9ed.akpm@osdl.org> <1118951458.4301.478.camel@dyn9047017072.beaverton.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1118951458.4301.478.camel@dyn9047017072.beaverton.ibm.com> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 16, 2005 at 12:50:59PM -0700, Badari Pulavarty wrote: > Yes. I am using CFQ scheduler. I changed nr_requests to 4 for all > my devices. I also changed "min_free_kbytes" to 64M. > Response time is still bad. Here is the vmstat, meminfo, slabinfo > and profle output. I am not sure why profile output shows > default_idle(), when vmstat shows 100% CPU sys. It's because you're sorting on the third field of readprofile(1), which is pure gibberish. Undoing this mistake will immediately enlighten you. Also, turn off slab poisoning when doing performance analyses. -- wli