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From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: Len Brown <lenb@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	Ingo Molnar <mingo@elte.hu>,
	Peter Zijlstra <peterz@infradead.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	nicolas.pitre@linaro.org,
	Linux PM list <linux-pm@vger.kernel.org>,
	alex.shi@linaro.org, vincent.guittot@linaro.org,
	morten.rasmussen@arm.com
Subject: Re: [RFC PATCHC 0/3] sched/idle : find the idlest cpu with cpuidle info
Date: Fri, 04 Apr 2014 10:16:58 +0200	[thread overview]
Message-ID: <533E6A7A.4070400@linaro.org> (raw)
In-Reply-To: <CAJvTdKk9AJUfCKGDS1RGDNJwP-Q9gTYswBEHHji6L6Lq3yd8JA@mail.gmail.com>

On 04/04/2014 08:29 AM, Len Brown wrote:
> Hi Daniel,
>
> Interesting idea.
>
> The benefit of this patch is to reduce power.
> Have you been able to measure a power reduction, via power meter, or
> via built-in RAPL power meter?
> (turbostat will show RAPL watts, or if you have constant quantity of
> work, use turbostat -J)

Hi Len,

thanks for looking the patches.

I will tweak, respin the patchset and do some more measurements.

I don't have a power meter but may be the RAPL could help to test on x86.

Thanks
   -- Daniel


-- 
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      reply	other threads:[~2014-04-04  8:16 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-28 12:29 Daniel Lezcano
2014-03-28 12:29 ` [RFC PATCHC 1/3] cpuidle: encapsulate power info in a separate structure Daniel Lezcano
2014-03-28 18:17   ` Nicolas Pitre
2014-03-28 20:42     ` Daniel Lezcano
2014-03-29  0:00       ` Nicolas Pitre
2014-03-28 12:29 ` [RFC PATCHC 2/3] idle: store the idle state the cpu is Daniel Lezcano
2014-04-15 12:43   ` Peter Zijlstra
2014-04-15 12:44     ` Peter Zijlstra
2014-04-15 14:17       ` Daniel Lezcano
2014-04-15 14:33         ` Peter Zijlstra
2014-04-15 14:39           ` Daniel Lezcano
2014-03-28 12:29 ` [RFC PATCHC 3/3] sched/fair: use the idle state info to choose the idlest cpu Daniel Lezcano
2014-04-02  3:05   ` Nicolas Pitre
2014-04-04 11:57     ` Rafael J. Wysocki
2014-04-04 16:56       ` Nicolas Pitre
2014-04-05  2:01         ` Rafael J. Wysocki
2014-04-17 13:53     ` Daniel Lezcano
2014-04-17 14:47       ` Peter Zijlstra
2014-04-17 15:03         ` Daniel Lezcano
2014-04-18  8:09           ` Ingo Molnar
2014-04-18  8:36             ` Daniel Lezcano
2014-04-17 15:53       ` Nicolas Pitre
2014-04-17 16:05         ` Daniel Lezcano
2014-04-17 16:21           ` Nicolas Pitre
2014-04-18  9:38             ` Peter Zijlstra
2014-04-18 12:13               ` Daniel Lezcano
2014-04-18 12:53                 ` Peter Zijlstra
2014-04-18 13:04                   ` Daniel Lezcano
2014-04-18 16:00                     ` Nicolas Pitre
2014-04-15 13:03   ` Peter Zijlstra
2014-03-31 13:52 ` [RFC PATCHC 0/3] sched/idle : find the idlest cpu with cpuidle info Vincent Guittot
2014-03-31 15:55   ` Daniel Lezcano
2014-04-01  7:16     ` Vincent Guittot
2014-04-01  7:43       ` Daniel Lezcano
2014-04-01  9:05         ` Vincent Guittot
2014-04-15 13:13           ` Peter Zijlstra
2014-04-01 23:01 ` Rafael J. Wysocki
2014-04-02  3:14   ` Nicolas Pitre
2014-04-04 11:43     ` Rafael J. Wysocki
2014-04-15 13:17       ` Peter Zijlstra
2014-04-15 13:25       ` Peter Zijlstra
2014-04-15 15:27         ` Nicolas Pitre
2014-04-15 15:33         ` Rafael J. Wysocki
2014-04-02  8:26   ` Daniel Lezcano
2014-04-04 11:23     ` Rafael J. Wysocki
2014-04-04  6:29 ` Len Brown
2014-04-04  8:16   ` Daniel Lezcano [this message]

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