How to get current CPUPower governor

Question

I want to get the current CPUPower governor.

When I type cpupower frequency-info I get a lot of information. I just want to get the governor, just like "ondemand" with no more information, to use its value in a program.

score 48 · Accepted Answer · edited Feb 22 '19 at 22:07

48

The current governor can be obtained as follows:

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

Note that cpu* will give you the scaling governor of all your cores and not just e.g. cpu0.

This solution might be system dependent, though. I'm not 100% sure this is portable.

edited Feb 22 '19 at 22:07

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answered Feb 03 '15 at 16:44

Marco

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Working in Fedora 23! With cpupower frequency-info --governors you can see the governors and with cpupower frequency-info --governor you can set it. – Facundo Victor May 23 '16 at 18:21
Wow! That is *so* user-friendly that it boggles the mind! – Theodore R. Smith Oct 12 '20 at 13:19

score 5 · Answer 2 · edited May 20 '17 at 06:42

In the latest Fedora release (26 alpha) on my Ryzen 7 system, I did this:

Fedora 26 alpha didn't have cpupower installed - so get it:

dnf install kernel-tools

This installs /etc/sysconfig/cpupower which should set performance level by default (edit the first line if you want a different level):

CPUPOWER_START_OPTS="frequency-set -g performance"
CPUPOWER_STOP_OPTS="frequency-set -g ondemand"

Now the critical bit - enable and start the cpupower service

systemctl enable --now cpupower

Confirm that performance level is set:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

Reboot and repeat that cat command to confirm still performance

How to get current CPUPower governor

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