All of lore.kernel.org
 help / color / mirror / Atom feed
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


-- 
  <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog


      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 [RFC PATCHC 0/3] sched/idle : find the idlest cpu with cpuidle info 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]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=533E6A7A.4070400@linaro.org \
    --to=daniel.lezcano@linaro.org \
    --cc=alex.shi@linaro.org \
    --cc=lenb@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=morten.rasmussen@arm.com \
    --cc=nicolas.pitre@linaro.org \
    --cc=peterz@infradead.org \
    --cc=rjw@rjwysocki.net \
    --cc=vincent.guittot@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.