cpupower frequency-info - Utility to retrieve cpufreq kernel information

cpupower [ -c cpulist ] frequency-info [options]

A small tool which prints out cpufreq information helpful to developers and interested users.

-e --debug Prints out debug information.

-f --freq Get frequency the CPU currently runs at, according to the cpufreq core.

-w --hwfreq Get frequency the CPU currently runs at, by reading it from hardware (only available to root).

-l --hwlimits Determine the minimum and maximum CPU frequency allowed.

-d --driver Determines the used cpufreq kernel driver.

-p --policy Gets the currently used cpufreq policy.

-g --governors Determines available cpufreq governors.

-a --related-cpus Determines which CPUs run at the same hardware frequency.

-a --affected-cpus Determines which CPUs need to have their frequency coordinated by software.

-s --stats Shows cpufreq statistics if available.

-y --latency Determines the maximum latency on CPU frequency changes.

-o --proc Prints out information like provided by the /proc/cpufreq interface in 2.4. and early 2.6. kernels.

-m --human human-readable output for the -f, -w, -s and -y parameters.

By default only values of core zero are displayed. How to display settings of other cores is described in the cpupower(1) manpage in the --cpu option section.

You can't specify more than one of the output specific options -o -e -a -g -p -d -l -w -f -y.

You also can't specify the -o option combined with the -c option.

 
/sys/devices/system/cpu/cpu*/cpufreq/ 
/proc/cpufreq (deprecated) 
/proc/sys/cpu/ (deprecated)

Dominik Brodowski <linux@brodo.de> - author 
Mattia Dongili<malattia@gmail.com> - first autolibtoolization

cpupower-frequency-set(1), cpupower(1)