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cpufreq-aperf

Calculate the average CPU frequency over a time period. Requires root privileges. More information: https://manned.org/cpufreq-aperf.

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 second refresh interval for all CPU cores:

sudo cpufreq-aperf -i {{3}}

Calculate only once:

sudo cpufreq-aperf -o