Add a DistributedTestDecorator.
This will broadcast over a JMS topic for available test clients.
Split the concurrency parameter (c) evenly amongst the available clients.
Instruct each client to run the test, with its share of the concurrency load.
Collect test results from each participating client and collate them toghether into the final set of test results.
The JMS configuration is to be supplied by properties, which a connection factory is created from by JNDI lookup. Any JMS provider may be used to support the distributed test.