cpupower-info (1) - Linux Manuals
cpupower-info: Shows processor power related kernel or hardware configurations
NAMEcpupower-info - Shows processor power related kernel or hardware configurations
SYNOPSIScpupower info [ -b ]
DESCRIPTIONcpupower info shows kernel configurations or processor hardware registers affecting processor power saving policies.
Some options are platform wide, some affect single cores. By default values of core zero are displayed only. cpupower --cpu all cpuinfo will show the settings of all cores, see cpupower(1) how to choose specific cores.