From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267999AbUHUXOk (ORCPT ); Sat, 21 Aug 2004 19:14:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268003AbUHUXOk (ORCPT ); Sat, 21 Aug 2004 19:14:40 -0400 Received: from probity.mcc.ac.uk ([130.88.200.94]:36365 "EHLO probity.mcc.ac.uk") by vger.kernel.org with ESMTP id S267999AbUHUXOj (ORCPT ); Sat, 21 Aug 2004 19:14:39 -0400 Date: Sun, 22 Aug 2004 00:14:38 +0100 From: John Levon To: Jesse Barnes Cc: Andrew Morton , oprofile-list@lists.sourceforge.net, linux-kernel@vger.kernel.org, anton@samba.org, phil.el@wanadoo.fr Subject: Re: [PATCH] improve OProfile on many-way systems Message-ID: <20040821231437.GB20175@compsoc.man.ac.uk> References: <20040821192630.GA9501@compsoc.man.ac.uk> <20040821135833.6b1774a8.akpm@osdl.org> <200408211806.32566.jbarnes@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200408211806.32566.jbarnes@sgi.com> User-Agent: Mutt/1.3.25i X-Url: http://www.movementarian.org/ X-Record: King of Woolworths - L'Illustration Musicale X-Scanner: exiscan for exim4 (http://duncanthrax.net/exiscan/) *1Byf4I-000D9w-BF*whxAdZ7XMw.* Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 21, 2004 at 06:06:31PM -0400, Jesse Barnes wrote: > I'll give it a go on Monday, when I have some more time reserved on the 512p > system. Last time I tried enabling oprofile, the system wouldn't boot or at > least got so slow that I didn't want to wait for it (i.e. init started, but > the system pretty much hung part way through the init scripts). That must be profile_rwsem in kernel/profile.c since the rest of the code won't be doing anything. I imagine it needs RCUing. > If it boots, I'll try collecting some info. John, will the oprofile tools in > RHEL3 work with 2.6.8.1-mm3 + these patches? No idea, I don't have time to track what Red Hat do or don't use. I recommend oprofile CVS or the last release. john