​CPU Frequency Scaling

CPU frequency scaling (or CPU speed scaling) is a Linux power management technique in which the system clock speed is adjusted on the fly to save power and heat. Just like C-states, this can cause unwanted latency on network connections.

• ​​The cpupower tool can also be used to check and modify CPU performance defaults and limits:

  Check:

  cpupower monitor or cpupower frequency-info

  Set CPUs to performance mode:

  cpupower frequency-set -g performance