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 yum install kernel-tools -y

cpupower frequency-info

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

cat /proc/cpuinfo | grep '^[c]pu MHz' |awk {'print $4'} |sort -r -u |head -n 5

cpupower frequency-set -g powersave

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

cat /proc/cpuinfo | grep '^[c]pu MHz' |awk {'print $4'} |sort -r -u |head -n 5