blog:2022:2022-01-13

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blog:2022:2022-01-13 [2022-02-21 17:28]
Decomo 		blog:2022:2022-01-13 [2022-03-23 11:51] (現在)
Decomo
行 48: 行 48:
  
 アクティブモードとパッシブモードの切り替えは''/sys/devices/system/cpu/intel_pstate/status''に、それぞれ''active''と''passive''を書き込むことで可能。切り替えた場合、スケーリングガバナーの変更もお忘れなく。 アクティブモードとパッシブモードの切り替えは''/sys/devices/system/cpu/intel_pstate/status''に、それぞれ''active''と''passive''を書き込むことで可能。切り替えた場合、スケーリングガバナーの変更もお忘れなく。
 +
 +<code>
 +# cpupower frequency-info
 +analyzing CPU 0:
 +  driver: intel_cpufreq
 +  CPUs which run at the same hardware frequency: 0
 +  CPUs which need to have their frequency coordinated by software: 0
 +  maximum transition latency: 20.0 us
 +  hardware limits: 1.20 GHz - 3.30 GHz
 +  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
 +  current policy: frequency should be within 1.20 GHz and 3.30 GHz.
 +                  The governor "ondemand" may decide which speed to use
 +                  within this range.
 +  current CPU frequency: Unable to call hardware
 +  current CPU frequency: 1.30 GHz (asserted by call to kernel)
 +  boost state support:
 +    Supported: yes
 +    Active: yes
 +
 +# echo active > /sys/devices/system/cpu/intel_pstate/status
 +
 +# 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:  Cannot determine or is not supported.
 +  hardware limits: 1.20 GHz - 3.30 GHz
 +  available cpufreq governors: performance powersave
 +  current policy: frequency should be within 1.20 GHz and 3.30 GHz.
 +                  The governor "performance" may decide which speed to use
 +                  within this range.
 +  current CPU frequency: Unable to call hardware
 +  current CPU frequency: 1.20 GHz (asserted by call to kernel)
 +  boost state support:
 +    Supported: yes
 +    Active: yes
 +</code>
  
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  • blog/2022/2022-01-13.txt
  • 最終更新: 2022-03-23 11:51
  • by Decomo