From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stan Hoeppner Subject: Re: SSD slowdown with 3.3.X? Date: Fri, 20 Apr 2012 22:53:39 -0500 Message-ID: <4F922F43.4050809@hardwarefreak.com> References: <4F8F7533.6020300@gmail.com> <4F8F82EC.1060708@teksavvy.com> <4F90C4CF.1010000@gmail.com> <4F921E18.6000301@teksavvy.com> <4F921ECF.2080303@teksavvy.com> Reply-To: stan@hardwarefreak.com Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mo-65-41-216-221.sta.embarqhsd.net ([65.41.216.221]:53355 "EHLO greer.hardwarefreak.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751215Ab2DUEAN (ORCPT ); Sat, 21 Apr 2012 00:00:13 -0400 In-Reply-To: <4F921ECF.2080303@teksavvy.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mark Lord Cc: Joe Ceklosky , "linux-ide@vger.kernel.org >> IDE/ATA development list" On 4/20/2012 9:43 PM, Mark Lord wrote: > On 12-04-20 10:40 PM, Mark Lord wrote: >> On 12-04-19 10:07 PM, Joe Ceklosky wrote: >>> Mark, >>> >>> >>> Thanks for the info, but nothing like that shows up: >>> >>> >>> [jceklosk@neptune tmp]$ cat c-3.2.15 >>> noop deadline [cfq] >>> noop deadline [cfq] >>> >>> >>> [jceklosk@neptune tmp]$ cat c-3.3.2 >>> noop deadline [cfq] >>> noop deadline [cfq] Probably not relevant in this case but maybe worth mentioning to get the word out: "As of kernel 3.2.12, the default i/o scheduler, CFQ, will defeat much of the parallelization in XFS." http://www.xfs.org/index.php/XFS_FAQ -- Stan