From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754958AbZBPUo1 (ORCPT ); Mon, 16 Feb 2009 15:44:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751628AbZBPUoS (ORCPT ); Mon, 16 Feb 2009 15:44:18 -0500 Received: from smtp-101-monday.nerim.net ([62.4.16.101]:51677 "EHLO kraid.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751209AbZBPUoR (ORCPT ); Mon, 16 Feb 2009 15:44:17 -0500 Date: Mon, 16 Feb 2009 21:44:11 +0100 From: Damien Wyart To: "Paul E. McKenney" Cc: Ingo Molnar , Peter Zijlstra , Mike Galbraith , =?iso-8859-1?Q?Fr=E9d=E9ric?= Weisbecker , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List Subject: Re: [Bug #12650] Strange load average and ksoftirqd behavior with 2.6.29-rc2-git1 Message-ID: <20090216204411.GA2306@localhost.localdomain> References: <20090215180355.GA2273@localhost.localdomain> <20090215193102.GA16873@elte.hu> <20090216084223.GA2641@localhost.localdomain> <20090216095059.GL6182@elte.hu> <87hc2u61e9.fsf@free.fr> <20090216122632.GA3158@elte.hu> <87ljs6pmao.fsf@free.fr> <20090216132151.GA17996@elte.hu> <20090216160613.GA6785@linux.vnet.ibm.com> <20090216185616.GB6785@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="x+6KMIRAuhnl3hBn" Content-Disposition: inline In-Reply-To: <20090216185616.GB6785@linux.vnet.ibm.com> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --x+6KMIRAuhnl3hBn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline * Paul E. McKenney [2009-02-16 10:56]: > Would you be willing to enable CONFIG_RCU_TRACE and CONFIG_TREE_RCU, > reproduce this and send the output of the debugfs files rcu/rcudata > and rcu/rcuhier? The commands for this would be: > mkdir /debug || : > mount -t debugfs debugfs /debug > cat /debug/rcu/rcuhier > cat /debug/rcu/rcudata Here are the two files (stored while the ksoftirqd problem occurs) attached. -- Damien --x+6KMIRAuhnl3hBn Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="rcuhier.txt" rcu: c=6148 g=6149 s=2 jfq=3 j=31ba nfqs=62392/nfqsng=3(62389) fqlh=7 1/3 0:1 ^0 rcu_bh: c=-296 g=-296 s=2 jfq=-93079 j=31ba nfqs=6/nfqsng=0(6) fqlh=0 0/3 0:1 ^0 --x+6KMIRAuhnl3hBn Content-Type: text/plain; charset=us-ascii Content-Disposition: attachment; filename="rcudata.txt" rcu: 0 c=6163 g=6164 pq=0 pqc=6162 qp=1 rpfq=2 rp=a249 dt=729511/1 dn=0 df=10 of=0 ri=38915 ql=5 b=10 1 c=6163 g=6164 pq=1 pqc=6163 qp=0 rpfq=0 rp=d580 dt=34418019/1 dn=0 df=374 of=0 ri=19636 ql=0 b=10 rcu_bh: 0 c=-296 g=-296 pq=1 pqc=-296 qp=0 rpfq=-19494 rp=e947 dt=729511/1 dn=0 df=0 of=0 ri=0 ql=0 b=10 1 c=-296 g=-296 pq=1 pqc=-296 qp=1 rpfq=-16839253 rp=2918 dt=34418019/1 dn=0 df=0 of=0 ri=2 ql=0 b=10 --x+6KMIRAuhnl3hBn--