AMD P-State EPP Performance With EPYC On Linux 6.3

When taking a geometric mean of the 103 benchmarks ran for this article, the AMD P-State EPP driver with performance governor now took the top two spots both for the balance_performance and performance EPP preferences. This was ever so slightly ahead of the AMD P-State and ACPI CPUFreq drivers with the performance governor.

And the CPU power consumption of each configuration over the entire course of all the benchmarks conducted.

The overall performance-per-Watt was the best for this AMD EPYC 7773X server when using the AMD P-State EPP driver with performance governor and balance_performance preference, but again it was a razor thin difference between that and the other modes.

And a look at the peak CPU frequency during the entire duration of the benchmarking sessions.

The AMD EPYC 7773X CPU0 package temperature was barely impacted by the CPU frequency scaling driver/governor differences besides the low-performing AMD P-State powersave mode.

I'll be carrying out similar benchmarks on lower-end EPYC and Ryzen platforms shortly with Linux 6.3 where the results are likely to be more interesting. Coming up this summer with Linux 6.4 is also going to be the AMD P-State Guided Autonomous Mode functionality being mainlined.