NAME cpufreq-aperf - Calculates the average frequency over a time period
SYNTAX cpufreq-aperf [options]
DESCRIPTION On latest processors exist two MSR registers referred to as: - MPERF increasing with maximum (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 pro- cessor core remained in C0 (working state) or any CX (sleep state) pro- cessor 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 <firstname.lastname@example.org>
SEE ALSO cpufreq-set(1), cpufreq-info(1)
Mattia Dongili 0.1 cpufreq-aperf(1)