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by piotrSikora
5579 days ago
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nginx uses native evented I/O provided by the operating system (epoll on Linux, kqueue on *BSD, /dev/poll and event ports on Solaris, input/output completion port on Windows). libevent and libev provide abstraction layer for those mechanisms and unified interface for all supported operating systems. |
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I know it's just semantics but I recently learned that some people actually believe that synchronous I/O API provided by OS is actually… well synchronous I/O. Obviously there cannot be any synchronous I/O going on in any modern operating system.