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Jovian-Experiments / Jovian-NixOS

Discussions: https://matrix.to/#/#Jovian-Experiments:matrix.org
https://jovian-experiments.github.io/Jovian-NixOS/
MIT License
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Investigate CPU governor #15

Closed samueldr closed 1 week ago

samueldr commented 2 years ago

It is known (via single thread benchmarking with 7z) that the powersave governor can leave compute power on the table.

Investigate whether it would be a better default to change it to ondemand or performance, especially with gaming scnearios in mind.

Also: what does upstream SteamOS do?

Hints:

powerManagement.cpuFreqGovernor = "performance";

sudo cpupower frequency-set -g ondemand

 $ grep . /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu2/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu3/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu4/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu5/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu6/cpufreq/scaling_governor:powersave
/sys/devices/system/cpu/cpu7/cpufreq/scaling_governor:powersave
rapenne-s commented 1 year ago

I found schedutil to be the most performant in term of framerate, both on SteamOS and openSUSE, however, setting to performance was giving a few less FPS but was drawing ~0.5 watts less

going down the rabbit hole, I tried to use amd-pstate but it's not unfortunately not compatible with the deck CPU because of a missing extension :/

samueldr commented 1 week ago

(Closing, nothing to really do... and some scheduler change is upcoming anyway, meaning this old issue is becoming irrelevant)