Reverse proxy for multiple single-threaded servers?

[Kevin Rosenberg]

I'm thinking about using perlbal for a system running about 15
single-threaded HTTP processes. Does perlbal handle being a proxy for
multiple single-threaded servers okay, or might it timeout a server
and consider it down if a the server is processing a long-running
request and the server does not accept a new, pending request.

Thanks for perlbal!

Kevin