From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from adsl-99-17-64-89.dsl.sfldmi.sbcglobal.net ([99.17.64.89]:56547 "EHLO crunch.scalableinformatics.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1760767Ab0GSRZP (ORCPT ); Mon, 19 Jul 2010 13:25:15 -0400 Message-ID: <4C448A72.4070601@scalableinformatics.com> Date: Mon, 19 Jul 2010 13:25:06 -0400 From: Joe Landman Reply-To: landman@scalableinformatics.com MIME-Version: 1.0 Subject: Re: An issue with fio performance on an SSD References: <4C44680B.4050707@scalableinformatics.com> In-Reply-To: <4C44680B.4050707@scalableinformatics.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: landman@scalableinformatics.com Cc: fio@vger.kernel.org Joe Landman wrote: > Greetings > > We are playing with some SSDs, and as usual, we want to use fio for > our testing regime. So we set up a simple streaming write: Ok, I figured it out. Add zero_buffers=1 to the job specification. Then we get this: Run status group 0 (all jobs): WRITE: io=32,706MB, aggrb=535MB/s, minb=548MB/s, maxb=548MB/s, mint=61133msec, maxt=61133msec -- Joseph Landman, Ph.D Founder and CEO Scalable Informatics Inc. email: landman@scalableinformatics.com web : http://scalableinformatics.com http://scalableinformatics.com/jackrabbit phone: +1 734 786 8423 x121 fax : +1 866 888 3112 cell : +1 734 612 4615