JBoss development, A new message was posted in the thread "Performance: XMLBeans vs JAXB": http://community.jboss.org/message/518147#518147 Author : Daniel Bevenius Profile : http://community.jboss.org/people/beve Message: -------------------------------------------------------------- I've been looking into startup and deployment time as part of the ongoing performance work that David and I are working on. I wanted to see if replacing XMLBeans, which is used for the internal configuration model (jboss-esb.xml), with JAXB would help improve our startup and deployment time. First lets look at the startup time, and begin with the existing XMLBeans version Below are the XMLBeans entries that showed up as hotspot when starting the application server with the default JBoss ESB services (i.e no custom .esb archives deployed). You can find the jprofiler results http://anonsvn.jboss.org/repos/labs/labs/jbossesb/workspace/performance/p.... Startup of JBoss ESB on JBoss AS 4 using XMLBeans: Total time ≈ 446 ms Now, lets take a look at the same but this time using JAXB. Below are the JAXB entries that showed up as hotspot when starting the application server with the default JBoss ESB services (i.e no custom .esb archives deployed). You can find the jprofiler results http://anonsvn.jboss.org/repos/labs/labs/jbossesb/workspace/performance/p.... Startup of JBoss ESB on JBoss AS 4 using jaxb: Total time = 1016 ms We can see that using JAXB actually increases the startup time, though please note that there is only a single invocation to create a JAXBContext, whereas the calls to the XMLBeans classes are multiple and would happen for deployments as well. What I mean is that if we have more .esb archives deployed this would also effect the startup time for the XMLBeans version. It would probably do the same for the JAXB version too but it does not register as a hotspot. Now, lets take a look a deploying a quickstart and compare the two solutions. Again, we start with XMLBeans and the results can be found http://anonsvn.jboss.org/repos/labs/labs/jbossesb/workspace/performance/p... l. Deployment of helloworld quickstart on JBoss AS 4 using XMLBeans: Total time = 8411 µs Now, lets take a look at the same but this time using JAXB. The results can be found http://anonsvn.jboss.org/repos/labs/labs/jbossesb/workspace/performance/p... 6.html. Deployment of helloworld quickstart on JBoss AS 4 using JAXB: Total time = 2670 µs While using JAXB actually adds to our startup time using the default configured esb services it might not make that much difference when user created .esb archives are deployed. I've not looked into this though but might be worth investigating. But for the deployment (after startup that is) there are some improvements to be made when using JAXB. Any thoughts on this? Regards, /Daniel -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/518147#518147