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Date:   Fri, 22 Jun 2018 15:52:02 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Vincent Guittot <vincent.guittot@linaro.org>
Cc:     Quentin Perret <quentin.perret@arm.com>,
        Ingo Molnar <mingo@kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
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        Patrick Bellasi <patrick.bellasi@arm.com>,
        Joel Fernandes <joel@joelfernandes.org>,
        Daniel Lezcano <daniel.lezcano@linaro.org>,
        Ingo Molnar <mingo@redhat.com>
Subject: Re: [PATCH v6 04/11] cpufreq/schedutil: use rt utilization tracking
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On Fri, Jun 22, 2018 at 03:26:24PM +0200, Peter Zijlstra wrote:
> > But this also means that we will start to inflate the utilization to
> > get higher OPP even if there is idle time and lost the interest of
> > using dl bw
> 
> You get _some_ inflation, but only if there is actual cfs utilization to
> begin with.

Note that at high idle time, the inflation really is minimal:

f(.2,.2,2)
.20312500000000000000