AMD Ryzen 9 3900X Linux CPU Frequency Scaling Governor Benchmarks

From the Linux 5.3 Git kernel as of the end of July while running Ubuntu 18.04 LTS, the CPUFreq governor options of ondemand, performance, powersave, and schedutil were tested. For most Linux distributions, “ondemand” is the default governor while “performance” is known for some workloads to deliver better performance when the CPUFreq driver doesn’t respond fast enough for ramping up the CPU clock frequencies. Schedutil meanwhile is the newest governor and makes use of the kernel’s scheduler utilization data to try to make more informed decisions about what to do with the CPU frequencies.