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Date: Thu, 10 Jul 2014 09:45:14 +0400
From: Alexander Volkov <vaa@altlinux.org>
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Subject: Re: [sisyphus] cpufreq-simple
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On 2014-07-09 18:21:40 +0300, Michael Shigorin wrote:
MS> On Wed, Jul 09, 2014 at 03:14:22PM +0400, Alexander Volkov wrote:
MS> > Вопрос по настройке частоты проца - установил cpufreq-simple,
MS> > но он не может рулить - нет доступа в /sys.
MS> > Модуль ядра загрузился.  Это где собака порылась?

MS> Что за процессор и что в dmesg | grep pstate ?
model name      : Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz
[    0.359728] Intel pstate controlling: cpu 0
[    0.359736] Intel pstate controlling: cpu 1
[    0.359747] Intel pstate controlling: cpu 2
[    0.359754] Intel pstate controlling: cpu 3
Поставил powersave, сделало вид, что применилось, однако:
cpupower frequency-info
analyzing CPU 0:
  driver: intel_pstate
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
   maximum transition latency: 0.97 ms.
  hardware limits: 800 MHz - 3.60 GHz
   available cpufreq governors: performance, powersave
   current policy: frequency should be within 800 MHz and 3.60	  GHz.
  The governor "powersave" may decide which	speed to use
  within this range.
  current CPU frequency is 3.20 GHz (asserted by call to hardware).
  boost state support:
    Supported: yes
    Active: yes
--
 Regards, Alexander