Available min freq and used cores count

[Kiraprint]

Saw that typical freq for battery usage is ~800-1000 MHz

So I wanted to try it out on my Ryzen 7 4800h

I have tried

1. edit the grub config file as in troubleshooting
2. edit the config file

Info:

Using settings defined in /etc/auto-cpufreq.conf file

Linux distro: Fedora Linux 38 Workstation Edition Linux kernel: 6.4.9-200.fc38.x86_64 Processor: AMD Ryzen 7 4800H with Radeon Graphics Cores: 16 Architecture: x86_64 Driver: acpi-cpufreq

------------------------------ Current CPU stats ------------------------------

CPU max frequency: 2900 MHz CPU min frequency: 1400 MHz

Core Usage Temperature Frequency CPU0 6.1% 40 °C 1400 MHz CPU1 0.0% 40 °C 1400 MHz CPU2 0.0% 40 °C 1397 MHz CPU3 1.0% 40 °C 1400 MHz CPU4 1.0% 40 °C 1400 MHz CPU5 1.0% 40 °C 1400 MHz CPU6 2.0% 40 °C 1400 MHz CPU7 0.0% 40 °C 1400 MHz CPU8 32.0% 40 °C 1400 MHz CPU9 0.0% 40 °C 1400 MHz CPU10 3.0% 40 °C 1400 MHz CPU11 2.0% 40 °C 1397 MHz CPU12 3.1% 40 °C 1400 MHz CPU13 1.0% 40 °C 1400 MHz CPU14 4.0% 40 °C 1397 MHz CPU15 0.0% 40 °C 1400 MHz

CPU fan speed: 2200 RPM

auto-cpufreq version: 1.9.8 (git: 8fbb9480)

Python: 3.11.4 psutil package: 5.9.5 platform package: 1.0.8 click package: 8.1.6 distro package: 1.8.0

Computer type: Notebook Battery is: discharging

auto-cpufreq system resource consumption: cpu usage: 0.0 % memory use: 0.22 %

Total CPU usage: 2.9 % Total system load: 1.96 Average temp. of all cores: 40.00 °C

Currently using: powersave governor Currently turbo boost is: on

---

So, is it available with some hacks set the minimum freq to 900MHz on my CPU?

And what about disabling some cores? Like if I have 8 of them, then on the battery turn off 2-4 of them.

[shadeyg56]

Hi, can you please share the contents of your config file located at /etc/auto-cpufreq.conf Also there is no way to turn off individual CPU cores

[evertvorster]

The base frequency of your CPU is 2900MHz. This is a hardware limit and it cannot go slower.

[AdnanHodzic]

Closing the issue due to inactivity.