From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267973AbUHUWIy (ORCPT ); Sat, 21 Aug 2004 18:08:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267965AbUHUWIy (ORCPT ); Sat, 21 Aug 2004 18:08:54 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:55979 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S267955AbUHUWIP (ORCPT ); Sat, 21 Aug 2004 18:08:15 -0400 From: Jesse Barnes To: Andrew Morton Subject: Re: [PATCH] improve OProfile on many-way systems Date: Sat, 21 Aug 2004 18:06:31 -0400 User-Agent: KMail/1.6.2 Cc: John Levon , oprofile-list@lists.sourceforge.net, linux-kernel@vger.kernel.org, anton@samba.org, phil.el@wanadoo.fr References: <20040821192630.GA9501@compsoc.man.ac.uk> <20040821135833.6b1774a8.akpm@osdl.org> In-Reply-To: <20040821135833.6b1774a8.akpm@osdl.org> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200408211806.32566.jbarnes@sgi.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Saturday, August 21, 2004 4:58 pm, Andrew Morton wrote: > John Levon wrote: > > Anton prompted me to get this patch merged. It changes the core buffer > > sync algorithm of OProfile to avoid global locks wherever possible. > > Anton tested an earlier version of this patch with some success. I've > > lightly tested this applied against 2.6.8.1-mm3 on my two-way machine. > > OK. Oprofile isn't the most commonly tested part of the kernel. Given > that you've "lightly tested" it, how do we know when it has had sufficient > testing for its swim upstream? 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). 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? Thanks, Jesse