cpupower

cpupower is a powerful Linux command-line suite designed to inspect and tune CPU power-saving features, such as frequency scaling (cpufreq) and idle states (cpuidle)

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First fo all we must be sure that we are allowed to use cpupower and following setting should be set to

$ zgrep CPU_FREQ /proc/config.gz
CONFIG_ACPI_CPU_FREQ_PSS=y
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=y
# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_POWERSAVE=y
CONFIG_CPU_FREQ_GOV_USERSPACE=y
CONFIG_CPU_FREQ_GOV_ONDEMAND=y
CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y

Dump frequency info of cpu

cpupower frequency-info

Get idle info of cpu

cpupower idle-info

Get cpupower powercap info

cpupower powercap-info

Get cpupower info (require root)

cpupower info

Monitor cpu info

cpupower monitor

Set cpupower frequency-set to performance

cpupower frequency-set -g performance

Set cpu perfomance for scaling governor without cpupower

echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Dump current setting for scaling_governor

cpupower frequency-info | grep "The governor"

Dump current setting for scaling_governor without cpupower

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

Set current scaling_governor permanent

• Enable cpupower by rc-update at boot"

rc-update add cpupower default

Set perfomance to be default by edit configuration file

vim /etc/conf.d/cpupower