linux-kernel - Re: [RFC PATCH 7/9] housekeeping: Use own boot option, independant from nohz

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Message-ID: <1502812653.1349.94.camel@gmx.de>
Date:   Tue, 15 Aug 2017 17:57:33 +0200
From:   Mike Galbraith <efault@....de>
To:     Christopher Lameter <cl@...ux.com>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     Frederic Weisbecker <fweisbec@...il.com>,
        Luiz Capitulino <lcapitulino@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, Rik van Riel <riel@...hat.com>,
        Wanpeng Li <kernellwp@...il.com>
Subject: Re: [RFC PATCH 7/9] housekeeping: Use own boot option, independant
 from nohz

On Tue, 2017-08-15 at 10:52 -0500, Christopher Lameter wrote:
> On Tue, 15 Aug 2017, Paul E. McKenney wrote:
> 
> > Don't the HPC guys just disable idle_balance(), or am I out of date again?
> 
> Ummm.. Why does idle management matter when your goal is to keep all
> processor busy working at maximum throughput?

If you _never_ idle, you never have to worry about it.  Is 100% CPU
until the end of time all there is to HPC?

	-Mike