Comparison of server in erlang and C/epoll

[P R Subramanya]

Hi,
  Wanted to know if there has been any comparative study of the
  performance of a server written in Erlang and one in C (using
  epoll() and/or NPTL threads)? The server could be as simple as
  an echo server. What is the response time seen by clients
  connecting to the servers written in Erlang as against thos
  written in C using epoll() and/or NPTL threads? Has there
  been any such study?

  Thanks in advance.
regards,
subbu