Man Linux: Main Page and Category List


       cpufreq-info - Utility to retrieve cpufreq kernel information


       cpufreq-info [options]


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


       -c --cpu <CPU>
               <CPU> number 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.


       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.


       /proc/cpufreq (deprecated)
       /proc/sys/cpu/ (deprecated)


       Dominik Brodowski <> - author
       Mattia Dongili<> - first autolibtoolization


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