From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e7.ny.us.ibm.com ([32.97.182.137]:59453 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787Ab1BDTVw (ORCPT ); Fri, 4 Feb 2011 14:21:52 -0500 Received: from d01dlp01.pok.ibm.com (d01dlp01.pok.ibm.com [9.56.224.56]) by e7.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id p14J0715016326 for ; Fri, 4 Feb 2011 14:02:08 -0500 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id 7F9E47280B5 for ; Fri, 4 Feb 2011 14:21:34 -0500 (EST) Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p14JLYWZ430170 for ; Fri, 4 Feb 2011 14:21:34 -0500 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p14JLXc9009088 for ; Fri, 4 Feb 2011 12:21:33 -0700 Received: from [9.65.64.24] (sig-9-65-64-24.mts.ibm.com [9.65.64.24]) by d03av02.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p14JLVMs008490 for ; Fri, 4 Feb 2011 12:21:32 -0700 Message-ID: <4D4C51B2.1090700@austin.ibm.com> Date: Fri, 04 Feb 2011 13:21:22 -0600 From: Steven Pratt MIME-Version: 1.0 Subject: test definition help needed Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: fio-owner@vger.kernel.org List-Id: fio@vger.kernel.org To: fio@vger.kernel.org I am trying to create a job file that randomly select a file form an imported list and reads the entire file sequentially. Them moves to the next file. I also want multiple jobs(processe) running the same workload. I have this: [global] bs=4k time_based=1 runtime=15m iodepth=4 rw=read ioengine=libaio time_based=1 ramp_time=600s norandommap [job1] opendir=/${FIO_MOUNT}/session1/small_file1 file_service_type=sequential numjobs=8 I used file_service_type=sequential because tought without it it would only do a single read (block) from the file before switching to a different file, which is not what I want. The issue with this test as written is it seems like all the fio processes choose files in the same order so I get way more cache hits than I want. I want this to be more of a random file selection, but with reading whole file. Any advice? Steve