cpufreq-aperf Calculate the average CPU frequency over a time period. Requires root privileges. Start calculating, defaulting to all CPU cores and 1 second refresh interval: sudo cpufreq-aperf Start calculating for CPU 1 only: sudo cpufreq-aperf -c {{1}} Start calculating with a 3 seconds refresh interval for all CPU cores: sudo cpufreq-aperf -i {{3}} Calculate only once: sudo cpufreq-aperf -o