Without knowing against which benchmark these numbers were measured make them pretty much meaningless. YJIT achieve a 700%+ speedup on some micro-benchmarks [0]

Without knowing against which benchmark these numbers were measured make them pretty much meaningless. YJIT achieve a 700%+ speedup on some micro-benchmarks [0] too (see `30k_ifelse` and `30k_methods`). But that's nowhere near the gains on more macro benchmark or real world code. I wouldn't be surprised if that 170% was on a similar micro-benchmark. [0] https://speed.yjit.org/benchmarks/bench-2021-09-28-070945 https://speed.yjit.org/benchmarks/bench-2021-09-28-070945