I have a JBoss 5 web application thats performing a number of service calls in the http thread sequentially. To speed up reponse time of the web app I would like to call the services asynchronously. I have no experience with JAX-WS 2.0 asynchronous calls. Which thread pool would they be using behind the scenes in JBoss 5 native WS or how is asynchonoicity implemented by JBoss native WS? Is there anything I should be aware of in how its tuned?