新秀の介の日記

_ 早起き

今朝は5時45分頃に起きてしまった。ここのところ、土曜日の試合が劇的なせいか、日曜日は早く起きてしまうことが多いようだ。

_ AMD P-State*その2

今のところは上手く動いているようなので、後々のリファレンスとして情報を貼り付けておく。

$ cpupower frequency-info
analyzing CPU 14:
  driver: amd-pstate
  CPUs which run at the same hardware frequency: 14
  CPUs which need to have their frequency coordinated by software: 14
  maximum transition latency: 20.0 us
  hardware limits: 550 MHz - 4.43 GHz
  available cpufreq governors: ondemand conservative powersave userspace performance schedutil
  current policy: frequency should be within 550 MHz and 4.43 GHz.
                  The governor "schedutil" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 4.09 GHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    AMD PSTATE Highest Performance: 166. Maximum Frequency: 4.43 GHz.
    AMD PSTATE Nominal Performance: 135. Nominal Frequency: 3.60 GHz.
    AMD PSTATE Lowest Non-linear Performance: 66. Lowest Non-linear Frequency: 1.76 GHz.
    AMD PSTATE Lowest Performance: 21. Lowest Frequency: 550 MHz.

それと、governerの設定方法をメモ。

$ sudo cpupower frequency-set -g schedutil