From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: Playing with SATA NCQ Date: Sun, 29 May 2005 16:17:49 -0400 Message-ID: <429A236D.8030307@pobox.com> 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> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <429A2238.8010604@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Michael Thonke Cc: Jens Axboe , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-ide@vger.kernel.org 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