I’ve faced with a very weird problem. The built-in JAX WS server implementation works 100 times slower on linux machines then on Mac OS X or Windows. I’ve created and shared a JMH test: https://github.com/Andremoniy/linuxjvmjaxwstest Basically it does the following: starts a JAX WS with one SOAP method: endpoint = Endpoint.publish(“http://localhost:8888/”, new FooServiceImpl()); performs client requests to this method: String