Benchmarks: Excellent Power Efficiency With 5th Gen AMD EPYC Using amd-pstate & Power Profiles
Across a variety of Java workloads these power tuning optimizations were helping significantly in delivering improved energy efficiency of this 5th Gen AMD EPYC server without costing too much raw performance and often times the recommended mode was still better than the former ACPI CPUFreq default.
The impact of the Balanced Memory Power Profile was one of my takeaways from this testing with being able to see the clear benefit for those wanting to run their AMD EPYC 9005 servers with delivering great performance but ensuring you are running with optimal power use.
The AMD P-State CPU frequency scaling driver continues to prove to be a very practical improvement for AMD EPYC 9005 servers whether you are after the best performance or optimal power efficiency.
AMD Ryzen systems with ACPI CPPC support have been defaulting to AMD P-State for a number of kernel releases while it's great to see this change materialize now for AMD EPYC servers moving forward.
For multi-threaded video encoding workloads there were nice improvements to power efficiency in the balanced memory mode without significantly hindering the raw performance.