Ubuntu - Set CPU Frequency

1. Find supported frequencies
1. cat /sys/devices/system/cpu/cpu/cpufreq/scaling_available_frequencies
1. Examples:
1.  cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
2. cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_available_frequencies 
2. Display your current set frequencies
1. grep MHz /proc/cpuinfo
3. Set the freqency
1. cpufreq-selector -c -f
1. For example:
1. cpufreq-selector -c 0 -f 2401000
2. cpufreq-selector -c 1 -f 2401000
4. Your max speed is at /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq.
   

   # cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq

   700000

   Your min speed is at /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq.
   

   # cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq

   500000

   If you are using the userspace governor, you can write to /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed to change the current speed.
   

   # echo 700000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

   # cat /proc/cpuinfo

   cpu MHz  : 697.252

   # echo 900000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

   # cat /proc/cpuinfo

   cpu MHz  : 976.152