Performance comparison between ZeroMQ, RabbitMQ and Apache Qpid

Question

I need a high performance message bus for my application so I am evaluating performance of ZeroMQ, RabbitMQ and Apache Qpid. To measur

Answer 1

I am using a broker instead of peer to to peer communication in ZeroMQ to to make the performance comparison fair to other message queue implementation that uses brokers.

Not sure why you want to do that -- if the only thing you care about is performance, there is no need to make the playing field level. If you don't care about persistence, filtering, etc. then why pay the price?

I'm also very leery of running benchmarks on VM's -- there are a lot of extra layers that can affect the results in ways that are not obvious. (Unless you're planning to run the real system on VM's, of course, in which case that is a very valid method).