linux-kernel - Re: Is it a workqueue related issue in 2.6.37 (Was: Re: [libvirt] blkio cgroup [solved])

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Message-ID: <20110224151701.GQ7840@htj.dyndns.org>
Date:	Thu, 24 Feb 2011 16:17:01 +0100
From:	Tejun Heo <tj@...nel.org>
To:	Dominik Klein <dk@...telegence.net>
Cc:	Vivek Goyal <vgoyal@...hat.com>,
	linux kernel mailing list <linux-kernel@...r.kernel.org>,
	libvir-list@...hat.com
Subject: Re: Is it a workqueue related issue in 2.6.37 (Was: Re: [libvirt]
 blkio cgroup [solved])

On Thu, Feb 24, 2011 at 03:58:22PM +0100, Dominik Klein wrote:
> Hi
> 
> > Hmmm...  Maybe the following commit?
> > 
> > commit 7576958a9d5a4a677ad7dd40901cdbb6c1110c98
> 
> Unfortunately not. This does not fix it for me.
> 
> Vivek introduced me to git bisect and I will try to do that tomorrow to
> find the changeset.

Maybe watching what the workqueue is doing using the following trace
events could be helpful.

# grep workqueue /sys/kernel/debug/tracing/available_events
workqueue:workqueue_insertion
workqueue:workqueue_execution
workqueue:workqueue_creation
workqueue:workqueue_destruction

Thanks.

-- 
tejun
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