On Mon, Jan 30, 2017 at 7:26 PM, Conrad E. Meyer <cem at freebsd.org> wrote: > (The CRC instruction takes 1 cycle but has 2-3 cycles of latency.) My mistake, it's not 2 anywhere. It's just 3 cycles on all workstation/server CPUs since Nehalem. Different on Atom chips and AMD. Best, Conrad