From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262916AbVGKWNS (ORCPT ); Mon, 11 Jul 2005 18:13:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262902AbVGKWNK (ORCPT ); Mon, 11 Jul 2005 18:13:10 -0400 Received: from smtp4.netcabo.pt ([212.113.174.31]:43485 "EHLO exch01smtp10.hdi.tvcabo") by vger.kernel.org with ESMTP id S262740AbVGKWDR (ORCPT ); Mon, 11 Jul 2005 18:03:17 -0400 Message-ID: <33519.192.168.1.8.1121119251.squirrel@www.rncbc.org> In-Reply-To: <20050711155503.GA21762@elte.hu> References: <20050703133738.GB14260@elte.hu> <1120428465.21398.2.camel@cmn37.stanford.edu> <24833.195.245.190.94.1120761991.squirrel@www.rncbc.org> <20050707194914.GA1161@elte.hu> <49943.192.168.1.5.1120778373.squirrel@www.rncbc.org> <57445.195.245.190.94.1120812419.squirrel@www.rncbc.org> <20050708085253.GA1177@elte.hu> <28798.195.245.190.94.1120815616.squirrel@www.rncbc.org> <20050708095600.GA5910@elte.hu> <63108.195.245.190.94.1121094757.squirrel@www.rncbc.org> <20050711155503.GA21762@elte.hu> Date: Mon, 11 Jul 2005 23:00:51 +0100 (WEST) Subject: Re: realtime-preempt-2.6.12-final-V0.7.51-11 glitches [no more] From: "Rui Nuno Capela" To: "Ingo Molnar" Cc: linux-kernel@vger.kernel.org User-Agent: SquirrelMail/1.4.4 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Priority: 3 (Normal) Importance: Normal X-OriginalArrivalTime: 11 Jul 2005 22:03:13.0525 (UTC) FILETIME=[55434250:01C58664] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > * Rui Nuno Capela wrote: > >> After several trials, with CONFIG_PROFILING=y and profile=1 >> nmi_watchdog=2 as boot parameters, I'm almost convinced I'm doing >> something wrong :) >> >> - `readprofile` always just outputs one line: >> >> 0 total 0.0000 >> >> - `readprofile -a` gives the whole kernel symbol list, all with zero >> times. >> >> Is there anything else I can check around here? > > it means that the NMI watchdog was not activated - i.e. the 'NMI' counts > in /proc/interrupts do not increase. Do you have LOCAL_APIC enabled in > the .config? If yes and if nmi_watchdog=1 does not work either then it's > probably not possible to activate the NMI watchdog on your box. In that > case try nmi_watchdog=0, that should activate normal profiling. (unless > i've broken it via the profile-via-NMI changes ...) > I've tried whether having nmi_watchdog has any influence, to no distinguishable result; readprofile always says zero times. And I'm sure I have LOCAL_APIC=y (see attached config.gz) -- rncbc aka Rui Nuno Capela rncbc@rncbc.org