CPU: Reset Speed

• disable the current driver: add intel_pstate=disable to your kernel boot line
• boot, then load the userspace module: modprobe cpufreq_userspace
• set the governor: cpupower frequency-set --governor userspace
• set the frequency: cpupower --cpu all frequency-set --freq 800MHz

Cek Speed

sudo -i
# paste <(cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_min_freq) <(cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq) <(cat /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq) | column -s $'\t' -t

Reset

To change the maximum frequency lower (you can't change it higher) use this command to change it from 2200 Mhz to 1700 Mhz:

for x in /sys/devices/system/cpu/*/cpufreq/; do echo 800000 | sudo tee $x/scaling_max_freq; done

Menggunakan cpupower

Install

apt install linux-tools-common linux-tools-4.15.0-20-generic linux-cloud-tools-4.15.0-20-generic

Penggunaan

# info
cpupower frequency-info

# set max
cpupower frequency-set -u 800M -r

NAME

cpupower frequency-set - A small tool which allows to modify cpufreq settings.

SYNTAX

cpupower [ -c cpu ] frequency-set [options]

DESCRIPTION

cpupower  frequency-set  allows you to modify cpufreq settings without having to type e.g.
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_set_speed" all the time.

OPTIONS

-d --min <FREQ>
     new minimum CPU frequency the governor may select.

-u --max <FREQ>
     new maximum CPU frequency the governor may select.

-g --governor <GOV>
     new cpufreq governor.

-f --freq <FREQ>
     specific frequency to be set. Requires  userspace  governor  to  be  available  and
     loaded.

-r --related
     modify all hardware-related CPUs at the same time

Pranala Menarik

• CPU