Valve and AMD work together to further enhance Linux with Ryzen CPUs



According to we reported some days, Valve has been working together with AMD to further improve the performance and get better frequency scaling of Ryzen processors on Linux, with the Steam Deck being one of the main drivers for this joint work by both companies. companies, which will also benefit Linux desktop users.

It was during the XDC (X.Org Developers Conference) 2021 that AMD formally presented its new driver "AMD P-State", which should make use of the ACPI Collaborative Processor Performance Controls (CPPC) feature found on Zen 2 and newer CPUs to make more accurate decisions about CPU frequency scalability/performance state.

Currently, the driver is limited to a subset of Zen 3 processors, but over time support for more CPU models will be implemented. Additionally, AMD and Valve are focused on using the Schedutil governor, which also leverages data from using the kernel scheduler to try to make more accurate decisions. Schedutil is already standard with ACPI CPUFreq in many Linux distribution kernels when not using Intel's P-State driver and generally works fine for most users.


AMD's numbers show the new P-State driver delivering measurable performance/efficiency improvements over traditional CPUFreq for different workloads. Below is the presentation for interested parties:





SOURCE: Phoronix
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