Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765216AbZAONx1 (ORCPT ); Thu, 15 Jan 2009 08:53:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755530AbZAONxN (ORCPT ); Thu, 15 Jan 2009 08:53:13 -0500 Received: from nacho.alt.net ([208.90.169.18]:37879 "EHLO nacho.alt.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752260AbZAONxL (ORCPT ); Thu, 15 Jan 2009 08:53:11 -0500 Date: Thu, 15 Jan 2009 13:53:09 +0000 (UTC) To: Jarek Poplawski , Thomas Gleixner cc: Denys Fedoryschenko , Peter Zijlstra , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Badalian Vyacheslav Subject: Re: deadlocks if use htb In-Reply-To: <20090115121801.GH5461@ff.dom.local> Message-ID: References: <20090114063909.GA4234@ff.dom.local> <200901141417.58667.denys@visp.net.lb> <1231937404.14825.4.camel@laptop> <20090115065322.GA4190@ff.dom.local> <20090115075450.GB4190@ff.dom.local> <20090115094530.GG4190@ff.dom.local> <20090115121801.GH5461@ff.dom.local> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Delivery-Agent: TMDA/1.1.4 (Edradour) From: Chris Caputo Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 951 Lines: 26 On Thu, 15 Jan 2009, Jarek Poplawski wrote: > On Thu, Jan 15, 2009 at 12:00:50PM +0000, Chris Caputo wrote: > ... > > I wish I had a repro scenario in a non-production environment, so I could > > help out further with this. If I did, I would test without nmi_watchdog > > while trying just 2.6.28 and Jarek's #4 patch. > > I think this watchdog doesn't matter too much yet. Probably it's more > about hardware (smp, maybe kind of hw timer), and high traffic vs. htb > rules. Per Thomas' comment in http://bugzilla.kernel.org/show_bug.cgi?id=10944 regarding broken hrtimers: -- nmi_watchdog=1 disables the local apic timers and therefor highres/nohz Try to use nmi_watchdog=2 instead. -- Chris -- 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/