From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.fullrate.dk ([90.185.1.42]:52212 "EHLO smtp.fullrate.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756600Ab1FAOdo (ORCPT ); Wed, 1 Jun 2011 10:33:44 -0400 Received: from arvinserver1.home.troels.arvin.dk (1608ds2-ksa.0.fullrate.dk [90.184.71.151]) by smtp.fullrate.dk (Postfix) with ESMTP id C251A9CE4A for ; Wed, 1 Jun 2011 16:33:43 +0200 (CEST) Received: from localhost (arvinserver1.home.troels.arvin.dk [127.0.0.1]) by arvinserver1.home.troels.arvin.dk (Postfix) with ESMTP id BFB4F108122 for ; Wed, 1 Jun 2011 16:33:42 +0200 (CEST) Received: from arvinserver1.home.troels.arvin.dk ([127.0.0.1]) by localhost (arvinserver1.home.troels.arvin.dk [127.0.0.1]) (amavisd-new, port 10024) with LMTP id R2EcN0rTrlS4 for ; Wed, 1 Jun 2011 16:33:41 +0200 (CEST) Received: from kurt-IV.home.troels.arvin.dk (kurt-IV.home.troels.arvin.dk [192.168.1.9]) by arvinserver1.home.troels.arvin.dk (Postfix) with ESMTP id 360ED108103 for ; Wed, 1 Jun 2011 16:33:41 +0200 (CEST) Message-ID: <4DE64DC5.3060703@arvin.dk> Date: Wed, 01 Jun 2011 16:33:41 +0200 From: Troels Arvin MIME-Version: 1.0 Subject: Re: Unaligned AIO/DIO References: <4DE531D0.40600@arvin.dk> <4DE61875.4070501@fusionio.com> <4DE635E0.8060808@arvin.dk> <4DE63BE8.60105@fusionio.com> In-Reply-To: <4DE63BE8.60105@fusionio.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: fio-owner@vger.kernel.org List-Id: fio@vger.kernel.org To: fio@vger.kernel.org Hello, Jens Axboe wrote: > The iometer like test > case you are using is meant to be used on a raw block device, not on a > file system. OK, but how does one use fio with a raw device? Can you give an example of a job specification file for working with a raw block device? And can that be done in a way which simulates parallel I/O (several processes/threads working simultaneously)? -- Regards, Troels Arvin http://troels.arvin.dk/