Ruby out performs Crystal significantly on this numerical algorithm

[zw963]

Check following thread.

BigInt is really really slow when run on linux, Or just Boehm GC issue?

I am reading following blog post write by @asterite Following is content copy from there. require "big" def fib(n) if n <= 1 BigInt.new(1) else fib(n - 1) + fib(n - 2) end end time = Time.local puts fib(BigInt.new(46)) puts Time.local - time Let’s run it: $ crystal fib.cr --release 2971215073 00:22:22.077676188 Then when run same code use Crystal 1.6-dev, it is much slower than the example above, in fact, i run several times, and break it early every time after 8 mins. …