That's the price to pay for correctness and all those mitigation technics. Also microbenchmarks are meaningless. My OpenBSD laptop writes 1GB of data in a few

That's the price to pay for correctness and all those mitigation technics. Also microbenchmarks are meaningless. My OpenBSD laptop writes 1GB of data in a few seconds to disk (RAID 0 with 2 SSDs). And the reason Linux is faster with memory allocation is because malloc does not really allocate memory... It does a lot of weird stuff. Just look up overcommiting for starters.