cpupower — Tools regarding CPU power and tuning options. More information: <https://manned.org/cpupower>.

List CPUs

sudo cpupower {{[-c|--cpu]}} {{all}} info

Print information about all cores

sudo cpupower {{[-c|--cpu]}} {{all}} info

Set all CPUs to a power-saving frequency governor

sudo cpupower {{[-c|--cpu]}} {{all}} frequency-set --governor {{powersave}}

Print CPU 0's available frequency governors

sudo cpupower {{[-c|--cpu]}} {{0}} frequency-info {{[-g|--governors]}} | grep "analyzing\|governors"

Print CPU 4's frequency from the hardware, in a human-readable format

sudo cpupower {{[-c|--cpu]}} {{4}} frequency-info {{[-w|--hwfreq]}} {{[-m|--human]}}