From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Lezcano Subject: Re: [RFC PATCHC 0/3] sched/idle : find the idlest cpu with cpuidle info Date: Fri, 04 Apr 2014 10:16:58 +0200 Message-ID: <533E6A7A.4070400@linaro.org> References: <1396009796-31598-1-git-send-email-daniel.lezcano@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-we0-f178.google.com ([74.125.82.178]:58347 "EHLO mail-we0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751814AbaDDIQn (ORCPT ); Fri, 4 Apr 2014 04:16:43 -0400 Received: by mail-we0-f178.google.com with SMTP id u56so3042782wes.9 for ; Fri, 04 Apr 2014 01:16:42 -0700 (PDT) In-Reply-To: Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: Len Brown Cc: "linux-kernel@vger.kernel.org" , Ingo Molnar , Peter Zijlstra , "Rafael J. Wysocki" , nicolas.pitre@linaro.org, Linux PM list , alex.shi@linaro.org, vincent.guittot@linaro.org, morten.rasmussen@arm.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 x8= 6. Thanks -- Daniel --=20 Linaro.org =E2=94=82 Open source software fo= r ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog