Major Description
Seems like the threshold can only be set as a system property:
http://www.java2s.com/Open-Source/Java-Document/Web-Services-apache-cxf-2.2.6/common/org/apache/cxf/io/CachedOutputStream.java.htm
I'd like to configure the threshold individually for applications in the same container - so it would be preferable to configure this through the endpoint and/or bus.