Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757939Ab2EaHwt (ORCPT ); Thu, 31 May 2012 03:52:49 -0400 Received: from www.linutronix.de ([62.245.132.108]:55393 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757874Ab2EaHws (ORCPT ); Thu, 31 May 2012 03:52:48 -0400 Date: Thu, 31 May 2012 09:52:45 +0200 (CEST) From: Thomas Gleixner To: Dave Jones cc: Linux Kernel Subject: Re: NOHZ: local_softirq_pending 08 In-Reply-To: <20120530214809.GA19223@redhat.com> Message-ID: References: <20120530214809.GA19223@redhat.com> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 781 Lines: 27 Dave, On Wed, 30 May 2012, Dave Jones wrote: > May 30 17:43:04 [ 1095.335659] NOHZ: local_softirq_pending 08 > > According to git, you ratelimited this back in 2007 with the message > "until we found the root cause of that problem." > > Is this an old problem that has returned ? Looks like. > Maybe interesting note: Both machines I see this on regularly are Atom cpus, > and it's always '08'. So it goes idle with NET_RX softirq pending. That really should not happen. I fear you need to fire up the tracer :) Thanks, tglx -- 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/