List of supported IO waiting mechanism available.

Enumerator
NOPOLL_IO_ENGINE_DEFAULT 

Selects the default (best) IO mechanism found on the system.

NOPOLL_IO_ENGINE_SELECT 

Selects the select(2) based IO wait mechanism.

NOPOLL_IO_ENGINE_POLL 

Selects the poll(2) based IO wait mechanism.

NOPOLL_IO_ENGINE_EPOLL 

Selects the epoll(2) based IO wait mechanism.