linux-kernel - Re: [Bug #12650] Strange load average and ksoftirqd behavior with 2.6.29-rc2-git1

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Message-ID: <20090216204411.GA2306@localhost.localdomain>
Date:	Mon, 16 Feb 2009 21:44:11 +0100
From:	Damien Wyart <damien.wyart@...e.fr>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Galbraith <efault@....de>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>
Subject: Re: [Bug #12650] Strange load average and ksoftirqd behavior with
	2.6.29-rc2-git1

* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> [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

View attachment "rcuhier.txt" of type "text/plain" (170 bytes)

View attachment "rcudata.txt" of type "text/plain" (418 bytes)