Library to create high-performance server applications

Question

I remember finding a C++ (or maybe plain C) library which does thread pooling, socket polling and other stuff, needed to write a high-performance server on Linux. (And this library was not Boost itself — but it could be that it used Boost.)

As usual, I can't remember the name of the library. Any guesses?

Update: that was not ACE.

Answer 1

Spserver uses libevent and so should have good performance on all platforms.

You could use Boost.ASIO directly and thread pool:

Multiple threads may call io_service::run() to set up a pool of threads from which completion handlers may be invoked ... all threads that have joined an io_service's pool are considered equivalent, and the io_service may distribute work across them in an arbitrary fashion.

Answer 2

Perhaps ACE?

Answer 3

POCO? libevent? Got any further clues?