Intel® Ethernet 800 Series
Linux Performance Tuning Guide
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