From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161004AbWGZWNt (ORCPT ); Wed, 26 Jul 2006 18:13:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161006AbWGZWNs (ORCPT ); Wed, 26 Jul 2006 18:13:48 -0400 Received: from ns1.soleranetworks.com ([70.103.108.67]:64658 "EHLO ns1.soleranetworks.com") by vger.kernel.org with ESMTP id S1161004AbWGZWNs (ORCPT ); Wed, 26 Jul 2006 18:13:48 -0400 Message-ID: <44C7F135.7000509@wolfmountaingroup.com> Date: Wed, 26 Jul 2006 16:48:21 -0600 From: "Jeff V. Merkey" User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050921 Red Hat/1.7.12-1.4.1 X-Accept-Language: en-us, en MIME-Version: 1.0 To: adam radford CC: dean gaudet , Alan Cox , Jan Kasprzak , linux-kernel@vger.kernel.org Subject: Re: 3ware disk latency? References: <20060710141315.GA5753@fi.muni.cz> <1153946249.13509.29.camel@localhost.localdomain> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org adam radford wrote: > On 7/26/06, dean gaudet wrote: > >> >> unfortunately when i did the experiment i neglected to perform >> simultaneous tests on more than one 3ware unit on the same >> controller. i >> got great results from a raid1 or from a raid10 (even a raid5)... but >> never i only tested one unit at a time. >> > > Did you try setting /sys/class/scsi_host/hostX/cmd_per_lun to 256 / > num_units ? > > -Adam > - > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > Adam, Isn't it set to this by default or is the default 128? Jeff