AMD P-State EPP Performance With EPYC On Linux 6.3

With the uvgg266 open-source H.266 encoder there was a small improvement in delivering the best power efficiency on this AMD Milan-X server when using the powersave governor with balanced performance ePP preference.

For many of the benchmarks conducted there wasn't a whole lot of difference aside from the amd_pstate powersave configuration being much slower and at times amd_pstate schedutil also being slower to improve the power efficiency based on the scheduler utilization data.

At least on the Milan-X server side, there wasn't any "game changers" with P-State EPP.