AMD pstate driver steps and discussion

[Mario Rossi]

My doubt was whether the 2022 information is still valid.
My installation is fresh and totally updated. I have not installed/modified anything.
I expect proxmox to integrate the best drivers by default.

If you tell me that it is not so and that on the 8000 series mobile cpu it is better to switch to amd-pstate from acpi-cpufreq then I will do it.
It is always nice to have better performance but with lower consumption.

 

[dizzydre21]

My doubt was whether the 2022 information is still valid.
My installation is fresh and totally updated. I have not installed/modified anything.
I expect proxmox to integrate the best drivers by default.

If you tell me that it is not so and that on the 8000 series mobile cpu it is better to switch to amd-pstate from acpi-cpufreq then I will do it.
It is always nice to have better performance but with lower consumption.

I can't really answer that for you, but it's been better for me across two different machines, at least for keeping performance and dropping idle wattage. I imagine Proxmox uses acpi-cpufreq because it's supported by the most CPUs. Also, it's done at the kernel level, so they may not even have control over it. I don't really know.

My suggestion would be to try it if you want/need something better. You can always go back if you don't like it, just read the docs so you know what's going on. I seem to recall needing a kernel cmd-line parameter to re-enable acpi-cpufreq. Just removing the blacklist wasn't enough to go back to it. The info was easy to find last time I needed it, but I can't remember where I found that tid-bit.

Most if not all of the info about amd-pstate drivers can be found here:
https://docs.kernel.org/admin-guide/pm/amd-pstate.html