No, Polyphony has a design that diverges from the model proposed by the FibeScheduler API. Note that the FiberScheduler API included with Ruby is only an interface, not an implementation. Polyphony uses io_uring on recent Linux kernels, or libev otherwise to perform I/O operations and implement timeouts.
No. libev provides a nice abstraction over different operating systems, and has good performance. I don't think coding a whole new backend against kqueue is worth the effort.
