[jboss-dev-forums] [Design of EJB 3.0] - Re: EJBTHREE-1800 Current status on performance improvement

[jaikiran]

After various fixes in EJB3 projects and other projects, we finally have some good news 

anonymous wrote : 
  | 3) The profiler snapshot shows hotspots on org.jboss.ejb3.metadata.plugins.loader.BridgedMetadataLocader (.retrieveAnnotation) 
  | 

A bit of digging around showed that the AnnotationRepositoryToMetadata associated with the Advisor was really performing badly. The issue is exactly what got fixed in JBCL-100. Incidentally the fix for JBCL-100 was integrated in AS branch 5_x yesterday. So here's the good news:

My test application (100 beans with 100 methods each and couple of injections in each bean) which used to take 25-30 sec (consistently) for deployment, now takes around 14 sec (consistently) with the JBCL-100 fix. Furthermore on my local setup, i tried out the suggested fix for AOPDependencyBuilder issue http://www.jboss.org/index.html?module=bb&op=viewtopic&t=155244&start=20#4230710. This reduces the deployment time by 4 seconds more. So now, the deployment which used to take 25-30 sec completes in 10-11 sec (consistently).

Further steps of action:

1) I see around 5-6 sec where AOP stuff is going on. Not sure if this can be reduced further. But i will continue looking into this.

2) The suggested fix for AOPDependencyBuilder, needs changes in AS->ejb3 module as well as the *-beans.xml in EJB3 project. We need to discuss when to do this (depends on whether the changes Ales made have gone into the AS branch)

3) Adrian in this thread http://www.jboss.org/index.html?module=bb&op=viewtopic&t=155074&start=0#4230450 mentioned that we could disable registering MC beans as MBeans (which are more useful for debugging). This change might slightly improve the AS startup time and deployment time of MC beans.  

4) The more important one - Get some community help to get hold of some "real" app to test these changes. So far, i have been test with my own test application. This has led to identification of various performance issues, but we might still be missing some. So a real app will help. I probably will wait for the AS 5.1.0 GA release, before asking for some community testing and some sample apps.



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