[papsosouid]

>Poll usually is run with threads on incoming connections/work, while epoll is keeping conections sleeping and wake up on incoming work. So in which way does this have "nothing to do with threads vs events at all"?

Poll and epoll are trivial implementation details in both cases. Nobody is going to be choosing threads vs event loops based on poll vs epoll, you are using one or the other in both cases, and it is no more relevant to the decision than what you had for breakfast in either case.