Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754059AbYKGQvp (ORCPT ); Fri, 7 Nov 2008 11:51:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752234AbYKGQvh (ORCPT ); Fri, 7 Nov 2008 11:51:37 -0500 Received: from gw1.cosmosbay.com ([86.65.150.130]:47712 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751192AbYKGQvg convert rfc822-to-8bit (ORCPT ); Fri, 7 Nov 2008 11:51:36 -0500 Message-ID: <491471FC.3090709@cosmosbay.com> Date: Fri, 07 Nov 2008 17:51:08 +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: <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> <491468F1.8070304@cosmosbay.com> <20081107164757.GS29626@one.firstfloor.org> In-Reply-To: <20081107164757.GS29626@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 17:51:23 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1713 Lines: 51 Andi Kleen a ?crit : > On Fri, Nov 07, 2008 at 05:12:33PM +0100, Eric Dumazet wrote: >> 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. > > I don't have tbench on the test box, but when I load it with a couple > of while true ; do true ; done loops it also continues sampling. > > Are you sure it worked in 2.6.27? You are right... I got same problem with 2.6.27.4, it seems... $ grep NMI /proc/interrupts NMI: 423689 79703 1576236 580137 1405669 1187909 2923037 5163299 Non-maskable interrupts $ grep NMI /proc/interrupts NMI: 423689 79703 1576236 580137 1405669 1187909 2923037 5163299 Non-maskable interrupts I'll try to find the faulty commit. Thank you -- 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/