This is another Ruby comparison benchmark, in the tradition of 2016, 2017 and 2020. This christmas Ruby 3.1.0 was released, featuring the brand-new YJIT just in time compiler. Pre-liminary benchmarks showed noticeable performance benefits for HexaPDF, so let’s see what the final version brings. The Benchmark Setup I will be using the same applications/libraries as last time (look there if you need