tldr/pages/linux/cpufreq-aperf.md

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2018-01-08 12:02:34 +00:00
# cpufreq-aperf
> Calculate the average CPU frequency over a time period.
> Requires root privileges.
> More information: <https://manned.org/cpufreq-aperf>.
2018-01-08 12:02:34 +00:00
- 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`