cpufreq-info (1) - Linux Manuals

cpufreq-info: Utility to retrieve cpufreq kernel information

NAME

cpufreq-info - Utility to retrieve cpufreq kernel information

SYNTAX

cpufreq-info [options]

DESCRIPTION

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

OPTIONS

-c --cpu <CPU>

 <CPUnumber which information shall be determined about.
-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.
-h --help
Prints out the help screen.

REMARKS

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.

FILES

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

AUTHORS

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

SEE ALSO

cpufreq-set(1), cpufreq-aperf(1)