linux-kernel - Re: [PATCH 3/3] cpuidle,menu: smooth out measured

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Message-ID: <563A2C21.8020308@linux.intel.com>
Date:	Wed, 4 Nov 2015 08:02:41 -0800
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	riel@...hat.com, linux-pm@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, rafael.j.wysocki@...el.com,
	len.brown@...el.com, daniel.lezcano@...aro.org
Subject: Re: [PATCH 3/3] cpuidle,menu: smooth out measured_us calculation

On 11/3/2015 2:34 PM, riel@...hat.com wrote:

> Furthermore, for smaller sleep intervals, we know the chance that
> all the cores in the package went to the same idle state are fairly
> small. Dividing the measured_us by two, instead of subtracting the
> full exit latency when hitting a small measured_us, will reduce the
> error.

there is no perfect answer for this issue; but at least this makes the situation
a lot better, so

Acked-by: Arjan van de Ven <arjan@...ux.intel.com>
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