From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adam Goryachev Subject: Re: RAID performance Date: Fri, 08 Feb 2013 18:21:53 +1100 Message-ID: <5114A791.3060802@websitemanagers.com.au> References: <51134E43.7090508@websitemanagers.com.au> <511361B3.8060204@hardwarefreak.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <511361B3.8060204@hardwarefreak.com> Sender: linux-raid-owner@vger.kernel.org To: stan@hardwarefreak.com Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 07/02/13 19:11, Stan Hoeppner wrote: > On 2/7/2013 12:48 AM, Adam Goryachev wrote: > Switching to noop may help a little, as may disablig NCQ, i.e. putting > the driver in native IDE mode, or setting queue depth to 1. > I changed these two settings last night (noop and nr_request = 1) and today seemed to produce more complaints, and more errors logged about write failures, so I have restored nr_requests to 128 and the scheduler back to deadline. Regards, Adam -- Adam Goryachev Website Managers www.websitemanagers.com.au