From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:44664 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755638Ab2DES32 convert rfc822-to-8bit (ORCPT ); Thu, 5 Apr 2012 14:29:28 -0400 Received: from pps.filterd (m0004060 [127.0.0.1]) by mx0b-00082601.pphosted.com (8.14.4/8.14.4) with SMTP id q35ITCPq017800 for ; Thu, 5 Apr 2012 11:29:28 -0700 Received: from mail.thefacebook.com (corpout1.snc1.tfbnw.net [66.220.144.38]) by mx0b-00082601.pphosted.com with ESMTP id 141g5b829e-1 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT) for ; Thu, 05 Apr 2012 11:29:28 -0700 From: Lucian Grijincu Subject: Usage of group reporting Date: Thu, 5 Apr 2012 18:29:23 +0000 Message-ID: In-Reply-To: <4F7DAF3D.2050000@kernel.dk> Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: fio-owner@vger.kernel.org List-Id: fio@vger.kernel.org To: "fio@vger.kernel.org" On 4/5/12 7:42 AM, "Jens Axboe" wrote: > Most people don't use the group reporting Why do you say that? For example I'm trying to find those parameters (direct-io, fadvise, number of threads, libaio/mmap/sync, etc.) that give an overall "best performance" (whatever that means) on a simulated workload. I'm using group reporting, because I want numbers for the entire system, not for an individual thread. Am I using "fio" wrong or is "fio" mostly used for other kinds of benchmarking? -- Lucian