From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luiz Capitulino <lcapitulino@redhat.com>
Subject: Re: kernel-rt rcuc lock contention problem
Date: Wed, 28 Jan 2015 14:06:14 -0500
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Cc: Marcelo Tosatti <mtosatti@redhat.com>,
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On Wed, 28 Jan 2015 11:00:47 -0800
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:

> > > 2.	You are letting the rcuc kthreads contend for the worker CPUs.
> > > 	Pin them to housekeeping CPUs.  This applies to both the
> > > 	host and the guest rcuc kthreads, but especially to the
> > > 	host rcuc kthreads.
> > 
> > I'd love to be able to do this, but the rcuc threads are CPU-bound
> > threads. There's one per CPU and the kernel doesn't allow me to move
> > them around.
> 
> Can you build with CONFIG_RCU_BOOST=n?  Then you won't have any rcuc
> kthreads.  

Oh, really? I will try this right away!

Thanks for your help!