Java NIO really faster than traditional IO ?

According to Jeremy Manson and Paul Tyma, NIO is not faster than the old traditional IO. Paul Tyma argues that since the Native Posix Thread Library (NPTL) arrived in Linux 2.6, multithreading is so cheap that it outperforms the select-based NIO alternative. He goes on to quote some impressive benchmarks from Rahul Bhargava, which show that multithreading gives at least 25% greater throughput that NIO, in a test with 1,700 concurrent connections.

Finally, here are the slides of an interesting presentation given by PaulTyma.