3 ms·

My favorite comparison is epoll vs kqueue. https://idea.popcount.org/2017-02-20-epoll-is-fundamentally-broken-12/ https://idea.popcount.org/2017-02-20-epoll-is

• garethrowlands 6y ago
  To be fair to Linux, it has io_uring now.
  • adrian_b 6y ago
    Yes, it seems that we are finally approaching the time when waiting for multiple events and asynchronous I/O will become simple and efficient on Linux. However, this has always been a weak spot for Linux until recently and it took too many iterations of various partial solutions of the problem to reach the current state. This was a case when avoiding the NIH approach and looking carefully at the older Windows or FreeBSD solutions would have resulted in an earlier good solution.
    • rwaksmunski 6y ago
      IIRC the official reason for simply not porting kqueue to Linux 20 years ago was: "it's over engineered". Linux has a ton a brilliant developers working on it, they had to know epoll wasn't all there, the epoll man page says as much. I've always suspected perhaps, maybe, potential patent infringement worries might have something to do with the broken design. If that's the case, fair enough, no one wants litigation.