With next-generation EPYC processors expected to be released next quarter, it's a good time to see how the performance of the original EPYC 7601 32-core / 64-thread processor's performance has evolved on Linux since its 2017 launch. This article is looking at the performance of an AMD EPYC 7601 Tyan server when running Ubuntu 17.04 as the newest stable Ubuntu release when EPYC was originally introduced in June 2017 compared to the performance when running the new Ubuntu 19.04 as well as jumping ahead to running the in-development Linux 5.2 kernel release. Additionally, the Ubuntu 19.04 + Linux 5.2 kernel configuration when also disabling Spectre mitigations.