Epoll and Kqueue: How Operating Systems Learned to Wait Efficiently(thecodinggopher.substack.com)
thecodinggopher.substack.com
Epoll and Kqueue: How Operating Systems Learned to Wait Efficiently
https://thecodinggopher.substack.com/p/epoll-and-kqueue-how-operating-systems
A lot of people talk about “async performance” without realizing the core efficiency gain came from avoiding O(n) scans on idle FDs.
Curious how many higher-level runtimes still leak edge-triggered vs level-triggered semantics in subtle ways.