Julia 1.13 cuts startup time by 20% and precompilation by 30%
Julia 1.13 Highlights
Julia 1.13 brings major performance wins: roughly 30% faster precompilation and 20% faster startup than 1.12, plus a revamped REPL with syntax highlighting and fzf-style history search. The release also introduces the @__FUNCTION__ macro, a new RapidhashNano hashing algorithm, and a garbage collector that skips image objects during marking, making full collections up to 17x faster. Scheduler fixes restore reliable Ctrl-C interrupts.
The effect is that the cost of a full collection now scales with the size of the heap that your program actually created, not with the amount of code that has been loaded.