From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267497AbUHWUmT (ORCPT ); Mon, 23 Aug 2004 16:42:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267786AbUHWUj5 (ORCPT ); Mon, 23 Aug 2004 16:39:57 -0400 Received: from omx3-ext.sgi.com ([192.48.171.20]:40365 "EHLO omx3.sgi.com") by vger.kernel.org with ESMTP id S267760AbUHWUfn (ORCPT ); Mon, 23 Aug 2004 16:35:43 -0400 From: Jesse Barnes To: wli@holomorphy.com Subject: Re: 2.6.8.1-mm3 Date: Mon, 23 Aug 2004 11:18:46 -0700 User-Agent: KMail/1.6.2 Cc: davidm@hpl.hp.com, Andrew Morton , linux-kernel@vger.kernel.org References: <20040820031919.413d0a95.akpm@osdl.org> <16681.45746.300292.961415@napali.hpl.hp.com> <20040823162735.GB4418@holomorphy.com> In-Reply-To: <20040823162735.GB4418@holomorphy.com> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200408231118.46473.jbarnes@engr.sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Monday, August 23, 2004 9:27 am, wli@holomorphy.com wrote: > On Mon, Aug 23, 2004 at 02:02:42AM -0700, David Mosberger wrote: > > You do realize that q-syscollect [1] can do this better for you > > without touching the kernel at all? > > [1] http://www.hpl.hp.com/research/linux/q-tools/ > > Never heard of it. Unfortunately, the issue I run into far more > frequently than tools not existing is users being unwilling or unable > to use them. In fact, it's even a relatively large hassle to get users > to boot with /proc/profile enabled regardless of its simplicity. For an > issue this common I would prefer that the most basic tools available > (i.e. the very few that are near-universal, e.g. readprofile(1) etc.) > report callers to spinlock contention by default. q-tools is great and I'd really like to use it, but it would be great if readprofile worked too and reported callers into the contention function. I've already found that q-tools isn't that easy to setup on some machines, whereas readprofile is near universal, so I think there's value in making the latter work reasonably well, while still keeping its simplicity. Thanks, Jesse