Hi Dan, XFire has provided a mechanism to re-use the JAXBContext across different web service publishing.
The Bug Id - XFIRE-669. (http://jira.codehaus.org/browse/XFIRE-669) Seems it lets us to pass an existing JAXBContext to a JaxbServiceFactory. The context is then used by all layers from there. i.e. we can construct one JAXBContext object with all the ObjectFactory.class'es from wsdl2java tool generated java files and re-use the JAXBContext object for multiple web service publishing. It helps to reduce the memory usage if there is large no. of related web services (like MTOSI solution, which has around 30-40 interfaces) are published by an application. It would be great if such a mechanism is provided by CXF also. With regards, Basava **************************************************************************** *********** This e-mail and attachments contain confidential information from HUAWEI, which is intended only for the person or entity whose address is listed above. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient's) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it! -----Original Message----- From: Daniel Kulp [mailto:[email protected]] Sent: Wednesday, November 18, 2009 1:37 AM To: [email protected] Cc: Basavaraja U T Subject: Re: High memory usage with web service registration In a way, I'm not exactly surprised by this. I just tried debugging some of the annotation stuff in the JRE and annotations are stored in LinkedHashMaps. Those hashmaps are definitely not the most memory efficient, especially for cases where there are only one or two annotations. Only Sun/Oracle can do much about that. JAXB COULD probably not output annotations in cases where the defaults would match what the annotation is setting anyway. That could be an enhancement request to them. You could possibly even write an XJC plugin that would remove the annotations in the places where they aren't needed. That could help. I'm really not sure what else to suggest. You COULD create a list of ALL the jaxb generated classes in all the services and configure them as extra classes. Thus, every service would create their jaxb context based on all the classes. We detect when they are the same and allow the services to share a JAXB context instead of creating a new one. However, that would allow the services to "know" more than they really should. Dan On Tue November 17 2009 2:40:06 am Basavaraja U T wrote: > Hi All, > > > > I am facing a high memory usage problem with web service registration when > wsdl has lots of simple and complex type definitions. I am using > jaxb(default) databinding and memory usage is quite high, it is in the > range of 2 to 8 MBs for each of the web service registration. I have > around 20 web services in an application and total memory usage for web > services registration alone is taking more than 60 MB!. > > > > I observed the behavior with cxf 2.2 and cxf 2.3 on Windows XP. > > I observed there were lots of annotations in java files generated from > wsdl2java. When these annotations were removed(for testing), the memory > usage was drastically less. > > > > Is there any way to reduce/optimize the memory usage? > > Is there any optimizations with respect to annotations/binding generated by > wsdl2java. > > > > With regards, > > Basava > -- Daniel Kulp [email protected] http://www.dankulp.com/blog
