From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: Resets on sil3124 & sil3726 PMP Date: Mon, 03 Sep 2007 17:59:21 +0900 Message-ID: <46DBCCE9.9080806@gmail.com> References: <46D2595B.1030409@sauce.co.nz> <46D2792B.401@vc.cvut.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from py-out-1112.google.com ([64.233.166.176]:15646 "EHLO py-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753494AbXICI7a (ORCPT ); Mon, 3 Sep 2007 04:59:30 -0400 Received: by py-out-1112.google.com with SMTP id u77so4776556pyb for ; Mon, 03 Sep 2007 01:59:29 -0700 (PDT) In-Reply-To: <46D2792B.401@vc.cvut.cz> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Petr Vandrovec Cc: Richard Scobie , linux-ide@vger.kernel.org Petr Vandrovec wrote: > For comparsion 1TB Hitachi behind 3726 PMP (again MS4UM) with sata_sil > patch I sent last week (no NCQ, 1.5Gbps link between 3512 and PMP, and > 3.0Gbps link between PMP and drive... why is it faster?): If you turn off NCQ by echoing 1 to /sys/block/sdd/device/queue_depth on sata_sil24, does the performance change? -- tejun