1. 현재 cpu 클럭 확인$ grep "MHz" /proc/cpuinfocpu MHz : 800.421cpu MHz : 800.121 2. 현재 cpu freq scaling 정책 확인$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governorperformance 3. 사용 가능한 cpu freq scaling 정책$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governorsperformance powersave 4. powersave 모드로 변경$ echo powersave | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor$ ..