apt install cpufrequtils
# cpufreq-info cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009 Report errors and bugs to [email protected], 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: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.70 GHz. analyzing CPU 1: driver: intel_pstate CPUs which run at the same hardware frequency: 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.70 GHz. analyzing CPU 2: driver: intel_pstate CPUs which run at the same hardware frequency: 2 CPUs which need to have their frequency coordinated by software: 2 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.70 GHz. analyzing CPU 3: driver: intel_pstate CPUs which run at the same hardware frequency: 3 CPUs which need to have their frequency coordinated by software: 3 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 1.40 GHz. analyzing CPU 4: driver: intel_pstate CPUs which run at the same hardware frequency: 4 CPUs which need to have their frequency coordinated by software: 4 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 1.40 GHz. analyzing CPU 5: driver: intel_pstate CPUs which run at the same hardware frequency: 5 CPUs which need to have their frequency coordinated by software: 5 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 1.34 GHz. analyzing CPU 6: driver: intel_pstate CPUs which run at the same hardware frequency: 6 CPUs which need to have their frequency coordinated by software: 6 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.70 GHz. analyzing CPU 7: driver: intel_pstate CPUs which run at the same hardware frequency: 7 CPUs which need to have their frequency coordinated by software: 7 maximum transition latency: 4294.55 ms. hardware limits: 400 MHz - 4.50 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 400 MHz and 4.50 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency is 2.70 GHz.
echo "GOVERNOR=\"powersave\"" > /etc/default/cpufrequtils systemctl restart cpufrequtils