erlview is faster than most view servers because erlview does not have the json <→ erlang term() overhead of most. A modification to couch_query_servers.erl is required. This is described in the README.
One persistent problem I have had is that when more than two or three map funs are written (I have only used Futon), the outputs get mixed up with the ‘save as’ names. I appreciate any help in solving this problem.