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.
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2 Answers
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.
- 1Working in Fedora 23! With cpupower frequency-info --governors you can see the governors and with cpupower frequency-info --governor <gov> you can set it.Facundo Victor– Facundo Victor2016-05-23 18:21:53 +00:00Commented May 23, 2016 at 18:21
- Wow! That is so user-friendly that it boggles the mind!Theodore R. Smith– Theodore R. Smith2020-10-12 13:19:00 +00:00Commented Oct 12, 2020 at 13:19
- still works in fedora 40. to change to performance mode (if supported)... dnf install kernel-tools ... cpupower frequency-set --governor performance .Vigrond– Vigrond2024-09-10 13:07:48 +00:00Commented Sep 10, 2024 at 13:07
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
