Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752833Ab3EIJER (ORCPT ); Thu, 9 May 2013 05:04:17 -0400 Received: from mail-bk0-f48.google.com ([209.85.214.48]:50189 "EHLO mail-bk0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751841Ab3EIJEP (ORCPT ); Thu, 9 May 2013 05:04:15 -0400 MIME-Version: 1.0 In-Reply-To: <20130508205633.GB18895@redhat.com> References: <20130508203042.GA18895@redhat.com> <20130508205258.GN3648@linux.vnet.ibm.com> <20130508205633.GB18895@redhat.com> Date: Thu, 9 May 2013 11:04:13 +0200 Message-ID: Subject: Re: rcu_preempt running flat out on idle desktop. From: Frederic Weisbecker To: Dave Jones , "Paul E. McKenney" , Linux Kernel , Ingo Molnar Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1429 Lines: 28 2013/5/8 Dave Jones : > On Wed, May 08, 2013 at 01:52:58PM -0700, Paul E. McKenney wrote: > > On Wed, May 08, 2013 at 04:30:42PM -0400, Dave Jones wrote: > > > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > > > 10 root 20 0 0 0 0 S 200.0 0.0 185301:36 rcu_preempt > > > 553 root 20 0 268m 76m 6764 S 200.0 2.6 144579:53 Xorg > > > 1199 root 20 0 0 0 0 S 200.0 0.0 306:17.85 kworker/1:0 > > > 501 root 20 0 0 0 0 S 200.0 0.0 4471:03 kworker/0:2 > > > 12 root 20 0 0 0 0 S 200.0 0.0 67277:16 rcuop/1 > > > 1237 davej 20 0 535m 15m 8484 S 200.0 0.5 3645:16 Terminal > > > 859 davej 20 0 117m 3036 1336 S 200.0 0.1 1986:55 htop > > > > > > There are a lot of processes allegedly using "200%" of CPU time, a handful > > > in the "196%" range, and then a bunch at 0. > > > > Yow!!! 185301 minutes is 128 days, which is a truly impressive amount of > > CPU time to accumulate in a few short hours. Right, Ingo has reported something about strange high numbers in top too. I need to investigate that. Thanks. -- 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/