From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261297AbVFMJyx (ORCPT ); Mon, 13 Jun 2005 05:54:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261379AbVFMJyx (ORCPT ); Mon, 13 Jun 2005 05:54:53 -0400 Received: from mail21.syd.optusnet.com.au ([211.29.133.158]:9656 "EHLO mail21.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S261297AbVFMJys (ORCPT ); Mon, 13 Jun 2005 05:54:48 -0400 From: Con Kolivas To: linux-kernel@vger.kernel.org Subject: Re: [RFC] blkstat Date: Mon, 13 Jun 2005 19:54:43 +1000 User-Agent: KMail/1.8.1 Cc: Nick Piggin References: <42AD55FA.50109@yahoo.com.au> In-Reply-To: <42AD55FA.50109@yahoo.com.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1273160.YLlThnIQCB"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200506131954.45361.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1273160.YLlThnIQCB Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline On Mon, 13 Jun 2005 19:46, Nick Piggin wrote: > I have made a simple tool to measure idle and busy time for > block devices. > > I have been wanting something like this for a while, because > the absolute throughput/seek numbers don't always help you > determine whether or not a workload is becoming IO bound. > > It requires a small kernel patch, and I've also attached my > lame userspace program for it. It is kind of like vmstat. > > Oh, and before I go further, does anyone know of any program > or statistic that allows the same functionality? Any comments? Would something like iostat give similar results? http://linux.inet.hr/ Cheers, Con --nextPart1273160.YLlThnIQCB Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQBCrVflZUg7+tp6mRURAkWNAJ9evfDE73N/wuavhV/PqpsEupc1fwCeO19s UCM1ERIB1njQpoD/x6eSPoo= =4SrQ -----END PGP SIGNATURE----- --nextPart1273160.YLlThnIQCB--