cat /sys/devices/system/cpu/cpufreq/policy6/scaling_available_governorsinteractive conservative ondemand userspace powersave performance schedutilschedutil：系统默认的自动变频模式userspace ：定频模式powersave ：默认到最低频
变频的负载阈值：/sys/devices/system/cpu/cpu0/cpufreq/schedutil/target_load
可以把这个负载值默认抬高一点，不让cpu那么频繁的升频
https://blog.csdn.net/weixin_43245753/article/details/124175382
https://blog.csdn.net/weixin_48721556/article/details/146070229