Comment by zyedidia

When I've measured this in the past I've seen Wasmtime's Cranelift compiler generating code that runs roughly 1.5x-1.9x slower than native (LLVM) on SPEC 2017 workloads, with x86-64 being closer to 1.5x and AArch64 closer to 1.9x. From what I recall, interpreter performance was generally more like 10x slower than native, with some workloads that involved heavy cryptography/SIMD being 30x slower.