Seven Years Of Ubuntu Performance - Benchmarking Ubuntu 13.04 Through Ubuntu 20.04 Development Builds
Even with newer OpenJDK releases, many of the Java benchmarks did not age gracefully with the newer Ubuntu releases due to the mitigations on Ubuntu 18.04 and later.
The GraphicsMagick OpenMP-threaded imaging operations did show some improvements with time but the results varied.
The TTSIOD performance on Sandy Bridge has been relatively stable since Ubuntu 13.10.