linux-kernel - RE: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait or nmi

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Message-ID: <1338925887.2749.38.camel@twins>
Date:	Tue, 05 Jun 2012 21:51:27 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	"Luck, Tony" <tony.luck@...el.com>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Ingo Molnar <mingo@...e.hu>, H Peter Anvin <hpa@...or.com>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	"Mallick, Asit K" <asit.k.mallick@...el.com>,
	Arjan Dan De Ven <arjan@...ux.intel.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	x86 <x86@...nel.org>, linux-pm <linux-pm@...r.kernel.org>,
	"Srivatsa S. Bhat" <srivatsa.bhat@...ux.vnet.ibm.com>
Subject: RE: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait or
 nmi

On Tue, 2012-06-05 at 21:43 +0200, Thomas Gleixner wrote:
> 
> I know that the current load balancer is too stupid to do that, but
> that's a different problem. Right now we can't fix the load balancer
> because we have no mechanisms to solve the other issues and the other
> issues are not solved because the stupid load balancer is in the way.
> 
This is not so.. If we do a power aware balancer that packs work
insteads of spreads it, its fairly easy to find who's waking the should
be idle cpus and try and fix these causes.


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