[zeromq-dev] kqueue & epoll based zmq_poll

Martin Sustrik sustrik at 250bpm.com
Sat Jun 11 13:59:50 CEST 2011

On 06/11/2011 11:23 AM, Pieter Hintjens wrote:
> For the CZMQ zloop reactor, at least, we're only rebuilding the pollset
> when there's a change. So that'd work nicely with epoll et al.

Ok. I should have not mentioned the second caveat. The real point is 
that epoll is meant to reduce complexity of polling from O(n) -- where n 
is the size of pollset -- to O(1). If we use epoll to implement 
zmq_poll(), we get complexity of O(n log n) which is actually worse than 
O(n) that you get using poll or select.


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