Powernowd: This governor daemon bases frequency changes off of the processor load and has four different behavioral modes that users can chose.
power nowd：这个调控器守护进程根据处理器负载改变基本频率，用户可以选择四种行为模式。
3
Here you can see that for almost every load, the tuned ondemand governor with an upwards utilization threshold of 98 is slightly more power efficient than the default ondemand governor.