Provided by: cpufrequtils_008-1build1_amd64 bug

NAME
       cpufreq-aperf - Calculates the average frequency over a time period


SYNTAX
       cpufreq-aperf [options]


DESCRIPTION
       On latest processors exist two MSR registers refered to as:
         - MPERF increasing with maxium (P0) frequency in C0
         - APERF increasing with current/actual frequency in C0

       From  this information the average frequency over a time period can be calculated and this
       is what this tool does.

       A nice falloff feature beside the average frequency is the time a processor core  remained
       in  C0  (working  state) or any CX (sleep state) processor sleep state during the measured
       time period. This information can be determined from the fact that MPERF only increases in
       C0 state.


OPTIONS
       -c --cpu <CPU>
               The <CPU> core to measure - default all cores.

       -i --interval <seconds>
              Refresh rate - default 1 second.

       -o --once
              Exit after one interval.

       -h --help
              Prints the available options.


REMARKS
       The msr driver must be loaded for this command to work.


AUTHORS
       Thomas Renninger <trenn@suse.de>


SEE ALSO
       cpufreq-set(1), cpufreq-info(1)