From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from casper.infradead.org ([85.118.1.10]:39770 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750792Ab2HQG0S (ORCPT ); Fri, 17 Aug 2012 02:26:18 -0400 Message-ID: <502DE3E3.2050901@kernel.dk> Date: Fri, 17 Aug 2012 08:25:39 +0200 From: Jens Axboe MIME-Version: 1.0 Subject: Re: Suggestion: Add ramp-up for rate testing. References: In-Reply-To: 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: Greg Sullivan Cc: fio@vger.kernel.org On 08/16/2012 05:24 PM, Greg Sullivan wrote: > I suggest adding a ramp-up time parameter that can be used to prevent > the rate testing from occurring until the ramp-up time has passed. > This will more accurately model the throughput capacity of streaming > systems that have a pre-load buffer to ride over the initial cache > warm-up period. There's already a ramp time setting, and the rate will not be checked before that has passed. Not sure what extra setting you would like? A ramp time, and then a rate ramp time after that? -- Jens Axboe