15:36:00.605523 poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 0) = 0 (Timeout) 15:36:00.605595 epoll_wait(5, [{EPOLLIN, {u32=4, u64=4}}], 32, -1) = 1 15:36:01.182484 poll([{fd=4, events=POLLIN|POLLERR|POLLHU...