From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from 173-166-109-252-newengland.hfc.comcastbusiness.net ([173.166.109.252]:48020 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756654Ab3A2Nyn (ORCPT ); Tue, 29 Jan 2013 08:54:43 -0500 Date: Tue, 29 Jan 2013 14:54:01 +0100 From: Jens Axboe Subject: Re: Group reporting with latency and IOPS Message-ID: <20130129135401.GG8800@kernel.dk> References: <20130129130212.GB8800@kernel.dk> <843E15216120C047928F6879B0E2D9240F6D243A@SACEXCMBX02-PRD.hq.netapp.com> <20130129134652.GF8800@kernel.dk> <843E15216120C047928F6879B0E2D9240F6D26D5@SACEXCMBX02-PRD.hq.netapp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <843E15216120C047928F6879B0E2D9240F6D26D5@SACEXCMBX02-PRD.hq.netapp.com> Sender: fio-owner@vger.kernel.org List-Id: fio@vger.kernel.org To: "Neto, Antonio Jose Rodrigues" Cc: "fio@vger.kernel.org" On Tue, Jan 29 2013, Neto, Antonio Jose Rodrigues wrote: > On Tue, Jan 29 2013, Neto, Antonio Jose Rodrigues wrote: > > atency: (clat) 577usecs - 0.577ms > > > > > >Correct too. > > > > > >> Am I doing the correct analysis? > > > > > >Yep. > > > > > >> One question is: Is it possible to have global IOPS and latency? > > > > > >You mean for both read and write combined? Fio does not report that, > > >but for IOPS you could just add them. For latency, the larger of the two. > > > > > >--=20 > > >Jens Axboe > > > > > > > Hi Jens > > > > This is neto from Brazil > > > > How are you? > > > > Thank you so much for your answer. > > > > How can I have a combined IOPS reported? > > You can't, at least not automatically. You would have to sum them up. It would not be hard to add at all, though, controlled by an option. I haven't had any requests for it before now, usually people ask for more fine grained metrics, not the other way around :-) > > -- > Jens Axboe > > Thank you Jens, I understand. To have an option to group everything > could be a good thing especially when you are doing a POC or > demonstrating performance for a customer where they are interested in > how many IOPS and total latency :-) I agree, I can see the use case. I'll add a 'unified_rw_reporting' option to be able to do that. Most accounting is done collectively, so it should be pretty simple to do this. -- Jens Axboe