[jboss-dev-forums] [JBoss Microcontainer Development] New message: "Profiling the kernel project"

JBoss development, A new message was posted in the thread "Profiling the kernel project": http://community.jboss.org/message/525867#525867 Author : Kabir Khan Profile : http://community.jboss.org/people/kabir.khan@jboss.com Message: -------------------------------------------------------------- Running a very simple benchmark for deploying a 1000 beans of type Object with no dependencies or configured properties, i.e.      protected List<BeanMetaData> setupContexts()    {       List<BeanMetaData> beans = new ArrayList<BeanMetaData>(iterations);       for (int i = 0 ; i < iterations ; i++)       {          BeanMetaDataBuilder builder = BeanMetaDataBuilder.createBuilder("Bean" + i, Object.class.getName());          beans.add(builder.getBeanMetaData());       }       return beans;    }   shows 85% of this time to be spent in the PreInstallAction. A similar test deploying 500 beans with dependencies in the wrong order (which we know from http://community.jboss.org/message/525809#525809 is very slow) shows 25% of the time spent in PreInstallAction.   Most of the time spent in PreInstallAction comes down to adding to and reading from the BasicMetaDataRepository.retrievals map, which hits  UnmodifiableScopeKey.equals lots of times (~2M times in the 1000 beans case):    public boolean equals(Object object)    {       if (object == this)          return true;       if (object == null || object instanceof ScopeKey == false)          return false;       ScopeKey other = (ScopeKey) object;       Scope[] otherArray = other.getArray();       return Arrays.equals(theScopes, otherArray);    } I will dig into this tomorrow and see if this can be optimized somehow, and if it is a problem in MDR I'll open another thread for that. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/525867#525867