I saw similar results in malloc()-heavy benchmarks. libc on macOS seems to have a fair number of performance traps; as another example, I found that timegm() o

I saw similar results in malloc()-heavy benchmarks. libc on macOS seems to have a fair number of performance traps; as another example, I found that timegm() on macOS is 100x slower than Linux, and 1000x slower than a reasonably optimized standalone algorithm: https://blog.reverberate.org/2020/05/12/optimizing-date-algorithms.html https://blog.reverberate.org/2020/05/12/optimizing-date-algo...