Phoronix published Linux 3.17 To Linux 4.16 Kernel Benchmarks On Intel Gulftown & Haswell Hardware
A quote from the article:
Our latest benchmarking of the near-final Linux 4.16 kernel is checking on the performance of two Intel systems going back to the days of Linux 3.17, the oldest kernel that would successfully boot with the Ubuntu 18.04 user-space. Every major kernel release was tested as we see how the Linux kernel performance has evolved on these Haswell and Gulftown systems since October 2014.Linux 3.17 To Linux 4.16 Kernel Benchmarks On Intel Gulftown & Haswell Hardware
The older system in use was an Intel Core i7 990X, formerly known as Gulftown and was a high-end CPU back in 2011 with its six cores / 12 threads and a 3.46GHz base frequency and 3.73GHz turbo frequency and support for three memory channels. This system with the MSI X58M motherboard was running with 12GB of RAM and a PNY CS1211 128GB SSD.