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@pertho The only little drawback compared to epoll is the lack of atomic signal mask setting, so you need a bit more code and a thoughtful structure to handle signals in the same loop. Apart from that, indeed much better than #epoll.

Unfortunately, it's not beter than inotify (for a completely different purpose, #file #monitoring ... kqueue covers them all). With #inotify, you can for example set a #watch by path, while #kqueue requires opened file descriptors. 😞