Performance report
There is an ActiveMQ performance report and tuning guide 
that was developed for a company looking to deploy the FUSE distribution of ActiveMQ in an extremely large application. The report includes extensive performance evaluation tests (different configurations, protocols and transports) and recommendations for tuning ActiveMQ and FUSE Message Broker.
If you're not convinced by performance reports then please do try running performance tests yourselfs. You might wanna check out our overview of Performance or try using out the ActiveMQ Performance Module Users Manual