Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752950AbZIKHRw (ORCPT ); Fri, 11 Sep 2009 03:17:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752656AbZIKHRv (ORCPT ); Fri, 11 Sep 2009 03:17:51 -0400 Received: from brick.kernel.dk ([93.163.65.50]:52437 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752275AbZIKHRv (ORCPT ); Fri, 11 Sep 2009 03:17:51 -0400 Date: Fri, 11 Sep 2009 09:17:53 +0200 From: Jens Axboe To: Nikanth Karthikesan Cc: Mark Landis , Alasdair G Kergon , dm-devel@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [RESEND] [PATCH linux-2.6-block#for-2.6.32] Seperate read and write statistics of in_flight requests Message-ID: <20090911071753.GC18599@kernel.dk> References: <200908241603.15158.knikanth@suse.de> <20090824110735.GI12579@kernel.dk> <200908241754.08592.knikanth@suse.de> <200909110913.46769.knikanth@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200909110913.46769.knikanth@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 806 Lines: 19 On Fri, Sep 11 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 information is exported as a sysfs attribute, as changing the > currently available stat files would break the existing tools. Applied, this is better than breaking existing stat exports. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/