Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933084AbXJLQeZ (ORCPT ); Fri, 12 Oct 2007 12:34:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760987AbXJLQM7 (ORCPT ); Fri, 12 Oct 2007 12:12:59 -0400 Received: from ms-smtp-03.nyroc.rr.com ([24.24.2.57]:34566 "EHLO ms-smtp-03.nyroc.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761223AbXJLQM5 (ORCPT ); Fri, 12 Oct 2007 12:12:57 -0400 Date: Fri, 12 Oct 2007 12:12:44 -0400 (EDT) From: Steven Rostedt X-X-Sender: rostedt@gandalf.stny.rr.com To: John Sigler cc: linux-kernel@vger.kernel.org, linux-rt-users@vger.kernel.org, Thomas Gleixner Subject: Re: NMI watchdog In-Reply-To: <470F7620.6040705@free.fr> Message-ID: References: <470F3BE0.4050807@free.fr> <470F7620.6040705@free.fr> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 965 Lines: 28 -- On Fri, 12 Oct 2007, John Sigler wrote: > Steven Rostedt wrote: > > > John Sigler wrote: > > APIC timer registered as dummy, due to nmi_watchdog=1! > 213a216,217 > > Clockevents: could not switch to one-shot mode: lapic is not functional. > > Could not switch to high resolution mode on CPU 0 > > Do you know why nmi_watchdog=1 disables high-resolution timers? > > And why nmi_watchdog=1 implies APIC timer registered as dummy? Crap, I forgot about that. Thomas explained why to me once, and I forgot. Does it still crash? If not, does it crash if you turn off highres? Or better yet, try turning off dynamic-ticks. We had a bug once before that had a problem with the new RCU code and dynamic ticks. -- Steve - 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/