YJIT Is the Most Memory-Efficient Ruby JIT

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  • ruby

    The Ruby Programming Language

    https://github.com/ruby/ruby/blob/master/doc/yjit/yjit.md#co...

    It just dumps all the JIT-compiled code? I'd expect to see some kind of heuristic or algorithm there... LFU or something.

    The internals of a JIT are essentially black magic to me, and I know the people working on YJIT are super talented, so I am sure there is a good reason why they just dump everything instead of the least-frequently used stuff. Maybe the overhead of trying frecency outweighs the gains, maybe they just haven't implemented it yet, or maybe it's just a rarely-reached condition.

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