cpupower

cpupower.txt

root@devpc01:/home/linhua# 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: 800 MHz - 3.40 GHz
  available cpufreq governors: conservative ondemand userspace powersave performance schedutil
  current policy: frequency should be within 800 MHz and 3.40 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 930 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes
    3200 MHz max turbo 4 active cores
    3200 MHz max turbo 3 active cores
    3200 MHz max turbo 2 active cores
    3400 MHz max turbo 1 active cores
root@devpc01:/home/linhua# cpupower frequency-info --freq
analyzing CPU 0:
  current CPU frequency: 920225 (asserted by call to kernel)
root@devpc01:/home/linhua# cpupower frequency-info --hwfreq
analyzing CPU 0:
  current CPU frequency: Unable to call hardware
root@devpc01:/home/linhua# cpupower frequency-info --driver
analyzing CPU 0:
  driver: intel_cpufreq
root@devpc01:/home/linhua# cpupower frequency-info --governors
analyzing CPU 0: