Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754684AbYKGQNW (ORCPT ); Fri, 7 Nov 2008 11:13:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752781AbYKGQNL (ORCPT ); Fri, 7 Nov 2008 11:13:11 -0500 Received: from gw1.cosmosbay.com ([86.65.150.130]:34020 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752536AbYKGQNK convert rfc822-to-8bit (ORCPT ); Fri, 7 Nov 2008 11:13:10 -0500 Message-ID: <491468F1.8070304@cosmosbay.com> Date: Fri, 07 Nov 2008 17:12:33 +0100 From: Eric Dumazet User-Agent: Thunderbird 2.0.0.17 (Windows/20080914) MIME-Version: 1.0 To: Andi Kleen CC: Ingo Molnar , Pekka J Enberg , Robert Richter , linux kernel , Andi Kleen Subject: Re: linux-2.6.28-rc2 regression : oprofile doesnt work anymore ? References: <4909F690.9090208@cosmosbay.com> <84144f020810310721x1d1eccbeica5d10608d7b2e57@mail.gmail.com> <20081104181855.GK9785@erda.amd.com> <4910CD65.1010301@cosmosbay.com> <49113894.5040806@cosmosbay.com> <49130694.7000007@cosmosbay.com> <20081107130249.GN29626@one.firstfloor.org> <49145B26.4040701@cosmosbay.com> <20081107160553.GR29626@one.firstfloor.org> In-Reply-To: <20081107160553.GR29626@one.firstfloor.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8BIT X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [0.0.0.0]); Fri, 07 Nov 2008 17:12:47 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1355 Lines: 49 Andi Kleen a ?crit : > On Fri, Nov 07, 2008 at 04:13:42PM +0100, Eric Dumazet wrote: >> Andi Kleen a ?crit : >>> Can you please test this patch and see if it solves the problem? >>> >>> Thanks, >>> -Andi >>> >>> --- >>> >>> oprofile: Fix p6 counter overflow check >>> >>> Fix the counter overflow check for CPUs with counter width > 32 >>> >>> I had a similar change in a different patch that I didn't submit >>> and I didn't notice the problem earlier because it was always >>> tested together. >>> >>> Signed-off-by: Andi Kleen >>> >> Thanks Andi >> >> Unfortunatly, there is still a freeze of NMIS after a while. > > How long is the while? > Less than 20 seconds if fully loaded with "tbench 8" on my 8 cpus machine. With your patch, many events are handled by oprofile (about 10.000.000 last time I tried) before freeze. Without your patch, freeze was very very fast, no more than 10.000 NMI... > I don't see this here on a Merom when I let it run for > 10 minutes or so. > > You might need to bisect it. Too many bugs during bisection unfortunatly, machine doesnt boot :( -- 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/