The difference between Python select poll Epoll

Select

Advantage: As the earliest asynchronous IO processing module, he can be used on Linux and on Windows, cross-platform compatibility is good, and poll and Epoll are not used in Windows system environment.

Cons: The mechanism of select determines whether a new connection is established by checking the ports in all input for Each loop. His overhead will increase linearly with the number of ports being detected. And his maximum number of detections is 1024 (can be modified).

Poll: His mechanism is the same as SELECT, so the more ports that are detected, the greater the overhead and the inability to use it under Windows. But he didn't have the maximum limit for detection.

Epoll: Uses a new mechanism to detect only active links, reducing overhead values

The difference between Python select poll Epoll