Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261430AbVE2USA (ORCPT ); Sun, 29 May 2005 16:18:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261427AbVE2USA (ORCPT ); Sun, 29 May 2005 16:18:00 -0400 Received: from mail.dvmed.net ([216.237.124.58]:56807 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S261428AbVE2UR5 (ORCPT ); Sun, 29 May 2005 16:17:57 -0400 Message-ID: <429A236D.8030307@pobox.com> Date: Sun, 29 May 2005 16:17:49 -0400 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050328 Fedora/1.7.6-1.2.5 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Michael Thonke CC: Jens Axboe , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Playing with SATA NCQ References: <20050526140058.GR1419@suse.de> <429793C8.8090007@gmail.com> <42979C4F.8020007@pobox.com> <42979FA3.1010106@gmail.com> <20050528121258.GA17869@suse.de> <4299BD23.6010004@gmail.com> <20050529190259.GA29770@suse.de> <429A2238.8010604@gmail.com> In-Reply-To: <429A2238.8010604@gmail.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: 0.0 (/) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 583 Lines: 17 Michael Thonke wrote: > Well the subjective feeling is great through! What I noticed is a > improvement on rsync (goes slighty faster drive to drive). > The noise decrease now it only make noise on very heavy IO reads and writes. It might be as simple as... NCQ means the drive is doing more work. More work means more noise. Jeff - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/