3 ms·This isn't why it's slow. 2x256 just isn't a lot of locks in CPU time.by loeg 1y agoThis isn't why it's slow. 2x256 just isn't a lot of locks in CPU time.ginko 1y agoThe problem with locking isn’t the overhead of the locking mechanism itself but the necessary serialization.loeg 1y agoAgain, mutex contention / serialization is not why this is slow.