From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: Playing with SATA NCQ Date: Mon, 30 May 2005 14:51:59 -0400 Message-ID: <429B60CF.5060204@pobox.com> References: <20050526140058.GR1419@suse.de> <1117382598.4851.3.camel@localhost.localdomain> <4299F47B.5020603@gmail.com> <1117387591.4851.17.camel@localhost.localdomain> <429A58F4.3040308@rtr.ca> <1117438192.4851.29.camel@localhost.localdomain> <429B56CA.5080803@rtr.ca> <1117477364.3108.2.camel@localhost.localdomain> <429B5A94.6010301@rtr.ca> <429B5CD3.7080106@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.dvmed.net ([216.237.124.58]:46315 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S261255AbVE3SwL (ORCPT ); Mon, 30 May 2005 14:52:11 -0400 In-Reply-To: <429B5CD3.7080106@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Michael Thonke Cc: Mark Lord , Erik Slagter , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Michael Thonke wrote: > The new ones are real SATA drives. But some PATA devices and controllers > support TCQ. TCQ is a poorly designed feature, and so, will only be supported on a very few, special host controllers. For most people, even if they down a drive with legacy TCQ, queueing will -never- be supported. For more details read http://linux.yyz.us/sata/software-status.html#tcq Jeff