From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jens Axboe Subject: Re: [PATCH] Seperate read and write statistics of in_flight requests Date: Mon, 24 Aug 2009 13:07:36 +0200 Message-ID: <20090824110735.GI12579@kernel.dk> References: <200908241603.15158.knikanth@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <200908241603.15158.knikanth@suse.de> Sender: linux-kernel-owner@vger.kernel.org To: Nikanth Karthikesan Cc: Mark Landis , Alasdair G Kergon , dm-devel@redhat.com, linux-kernel@vger.kernel.org List-Id: dm-devel.ids On Mon, Aug 24 2009, Nikanth Karthikesan wrote: > Currently, there is a single in_flight counter measuring the number of > requests in the request_queue. But some monitoring tools would like to know > how many read requests and write requests are in progress. Split the current > in_flight counter into two seperate counters for read and write. > > This patch is based on a patch from Mark Landis With fear of stating the obvious, this changes the output format of the exported stat files. This can/will break existing tools. -- Jens Axboe