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blueline:/sys/devices/system/cpu/cpu0 # ls
core_ctl cpufreq cpuidle hotplug isolate of_node online power rq-stats sched_load_boost subsystem uevent
blueline:/sys/devices/system/cpu/cpu0

查看当前核心的频率

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:/sys/devices/system/cpu/cpu0/cpufreq # ls
affected_cpus    cpuinfo_transition_latency    scaling_boost_frequencies scaling_max_freq stats
cpuinfo_cur_freq related_cpus                  scaling_cur_freq          scaling_min_freq
cpuinfo_max_freq scaling_available_frequencies scaling_driver            scaling_setspeed
cpuinfo_min_freq scaling_available_governors   scaling_governor          schedutil
blueline:/sys/devices/system/cpu/cpu0/cpufreq # cat cpu
cpuinfo_cur_freq              cpuinfo_max_freq              cpuinfo_min_freq              cpuinfo_transition_latency
blueline:/sys/devices/system/cpu/cpu0/cpufreq # cat cpuinfo_cur_freq
576000

查看当前核心的调度策略：cat scaling_governor

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blueline:/sys/devices/system/cpu/cpu0/cpufreq # ls
affected_cpus    cpuinfo_transition_latency    scaling_boost_frequencies scaling_max_freq stats
cpuinfo_cur_freq related_cpus                  scaling_cur_freq          scaling_min_freq
cpuinfo_max_freq scaling_available_frequencies scaling_driver            scaling_setspeed
cpuinfo_min_freq scaling_available_governors   scaling_governor          schedutil
blueline:/sys/devices/system/cpu/cpu0/cpufreq # cat scaling_available_governors\
#      ondemand:按需给与       powersave：节能的  performance：性能的（最高频）
conservative ondemand userspace powersave performance schedutil
//     
blueline:/sys/devices/system/cpu/cpu0/cpufreq # cat scaling_governor
schedutil
blueline:/sys/devices/system/cpu/cpu0/cpufreq #

查看当前核心所有可能的频率

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blueline:/sys/devices/system/cpu/cpu0/cpufreq # cat scaling_available_frequencies
300000 403200 480000 576000 652800 748800 825600 902400 979200 1056000 1132800 1228800 1324800 1420800 1516800 1612800 1689600 1766400

设置锁频,我们所以设置频率为performance