电源模式

$ cpufreq-info
                  
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
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: 4294.55 ms.
  hardware limits: 1.20 GHz - 3.50 GHz
  available cpufreq governors: performance, powersave
  current policy: frequency should be within 1.20 GHz and 3.50 GHz.
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency is 1.20 GHz.

sudo bash -c 'for i in {0..31}; do cpufreq-set -c $i -g performance; done'

sudo bash -c 'for i in {0..31}; do cpufreq-set -c $i -g powersave; done'

sudo bash -c 'for i in {0..31}; do cpufreq-set -c $i -g ondemand; done'