Performance Comparison of Tail-Recursive and Body-Recursive Functions in Different Elixir Versions

The article revisits a previous discussion on tail-recursion optimization and benchmarks how the introduction of the JIT in OTP 24 has affected Elixir's function performance. The author, PragTob, compares the performance of tail-recursive and body-recursive functions over multiple Elixir and OTP versions. For modern Elixir and Erlang versions, tail-recursive functions appear to be faster across all tested inputs, reversing trends observed in earlier versions. Memory consumption was also analyzed, revealing that body-recursive functions consume significantly less memory. However, despite performance improvements, the author reminds readers to benchmark their own code, as compiler optimizations and runtime environments can differ.