AMD P-State vs. ACPI CPUFreq Testing With Ryzen Laptops On Linux 5.17
The Linux 5.17 AMD P-State testing was kicked off with some web browser benchmarking given the commonality of Firefox and Chrome browser usage. Similar to past rounds of AMD P-State testing when in development/patch form, both the Ryzen 5 5500U and Ryzen 9 5900HX laptops were seeing slightly better performance out of acpi-cpufreq over amd-pstate -- both for the default "schedutil" scheduler utilization governor and performance.
AMD P-State hadn't led either when looking at the CPU package power consumption during this testing.
With the more demanding JetStream 2.0 benchmark, acpi-cpufreq was still leading in performance and performance-per-Watt for CPUFreq compared to AMD P-State in Schedutil while the performance governor was comparable between the drivers.
For the web browser testing on both the 5500U and 5900HX, the new AMD P-State driver didn't come out as particularly attractive at least for these laptops tested.