From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934028Ab2FHI7r (ORCPT ); Fri, 8 Jun 2012 04:59:47 -0400 Received: from bar.sig21.net ([80.81.252.164]:49507 "EHLO bar.sig21.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932177Ab2FHI7q (ORCPT ); Fri, 8 Jun 2012 04:59:46 -0400 X-Greylist: delayed 1574 seconds by postgrey-1.27 at vger.kernel.org; Fri, 08 Jun 2012 04:59:46 EDT Date: Fri, 8 Jun 2012 10:32:47 +0200 From: Johannes Stezenbach To: Dave Jones Cc: Francois Romieu , Marc Dionne , Thomas Gleixner , Linux Kernel Subject: Re: NOHZ: local_softirq_pending 08 Message-ID: <20120608083247.GA16529@sig21.net> References: <20120530214809.GA19223@redhat.com> <20120601225754.GA25281@electric-eye.fr.zoreil.com> <20120605231550.GA20981@electric-eye.fr.zoreil.com> <20120606014656.GA24870@redhat.com> <20120606054251.GA24467@electric-eye.fr.zoreil.com> <20120608023420.GD7191@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120608023420.GD7191@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Spam-21-Score: -2.9 (--) X-Spam-21-Report: No, score=-2.9 required=8.0 tests=ALL_TRUSTED=-1,BAYES_00=-1.9 autolearn=ham Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jun 07, 2012 at 10:34:20PM -0400, Dave Jones wrote: > Ok. This was a bit of a pain to trace, as I can't trigger the NOHZ message > when I bring up/down the interface by hand. It only seems to happen > during boot now for some reason. The message is only printed 10 times on each boot due to the "ratelimit" in tick_nohz_stop_sched_tick. I once debugged an issue with rt2x00 (20ed3166c) and found that fairly confusing at first. HTH Johannes