Linux Epoll

I have been trying to get a FastCGI application working on my dreamhost account and am noticing that calls to epoll_wait() are failing and setting an errno=38 (NOSYS “Function not implemented”). Is there some reason that epoll is not implemented on dreamhost? I understand that epoll_pwait() was not yet added to the kernel in the 2.4 series which dreamhost uses, but why no epoll_wait()? Does all FastCGI code have to use select() on dreamhost?