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3.2.3. Tuning CPUfreq Policy and Speed

Once you've chosen an appropriate CPUfreq governor, you can further tune the speed of each CPU using the tunables found in /sys/devices/system/cpu/[cpu ID]/cpufreq/. These tunables are:
To view the current value of each tunable, use cat [tunable]. For example, to view the current speed of cpu0 (in KHz), use:
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq.
To change the value of each tunable, use echo [value] > /sys/devices/system/cpu/[cpu ID]/cpufreq/[tunable]. For example, to set the minimum clock speed of cpu0 to 360 KHz, use:
echo 360000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq