linux-kernel - Re: v2.6.21.4-rt11

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Date:	Tue, 19 Jun 2007 12:15:31 -0700 (PDT)
From:	Christoph Lameter <clameter@....com>
To:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
cc:	Ingo Molnar <mingo@...e.hu>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dinakar Guniguntala <dino@...ibm.com>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	suresh.b.siddha@...el.com, pwil3058@...pond.net.au,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: v2.6.21.4-rt11

On Tue, 19 Jun 2007, Srivatsa Vaddagiri wrote:

> On Tue, Jun 19, 2007 at 11:04:30AM +0200, Ingo Molnar wrote:
> > I'm wondering, why did this trigger under CFS and not on mainline? 
> > Mainline seems to have a similar problem in idle_balance() too, or am i 
> > misreading it?
> 
> The problem is there in mainline very much. I could recreate the problem
> with 2.6.22-rc5 (which doesnt have CFS) on that same hardware, with
> CONFIG_NUMA enabled.
> 
> Let me know if you needed anything else to be clarified.

This is a bugfix that needs to go into 2.6.22.

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