my @exp = sort((fileno($r), fileno($x)));
is_deeply(\@fds, \@exp, 'got both ready FDs');
is($p->epoll_ctl(EPOLL_CTL_DEL, fileno($r), 0), 0, 'EPOLL_CTL_DEL OK');
my @exp = sort((fileno($r), fileno($x)));
is_deeply(\@fds, \@exp, 'got both ready FDs');
is($p->epoll_ctl(EPOLL_CTL_DEL, fileno($r), 0), 0, 'EPOLL_CTL_DEL OK');