I ran this same exact comparison before and I seem to recall much different results. Unfortunately I no longer have that code. This was part of http://opensource.atlassian.com/projects/hibernate/browse/HHH-227
Can you make sure you "prime" or "warm up" the jvm before you start taking measurements? On Thu, 2010-05-27 at 15:39 +0300, Кирилл Кленский wrote: > Hi, > > My measurements have indicated that there is a performance gain. I have > measured the time spent in setPropertyValues and getPropertyValues. > The optimized version was 4 times faster in these methods giving an > estimated application performance increase of about 3%. > Optimizing getPropertyValue and setPropertyValue could give 1.5% more > according to our rough calculations. > > Kirill > > 26 мая 2010 г. 23:53 пользователь Emmanuel Bernard > <emman...@hibernate.org>написал: > > > Hi, > > Have you noticed a perf difference in your application with and without the > > patch? > > I am wondering if modern VMs have catched up with what Javassist does. > > > > On 26 mai 2010, at 18:29, Кирилл Кленский wrote: > > > > > 1. I have noticed that > > > org.hibernate.bytecode.javassist.BulkAccessorFactory.findAccessors(...) > > is > > > searching for accessor methods in the optimized entity class only. This > > > means that the methods from the superclasses are not visible during > > > BulkAccessor creation unless overridden by child classes. By enhancing > > the > > > algorithm to search down the inheritance tree we could avoid creation of > > > redundant methods which increase the code verbosity a lot. In our case > > > almost all the entities are inherited from the base classes having the > > > common entity properties defined, so the reflection optimization does not > > > work for any of them until we override the inherited methods in all the > > > child classes. The implementation is trivial, but I have got a ready > > > prototype if anybody is interested. > > > > > _______________________________________________ > hibernate-dev mailing list > hibernate-dev@lists.jboss.org > https://lists.jboss.org/mailman/listinfo/hibernate-dev -- Steve Ebersole <st...@hibernate.org> http://hibernate.org _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev
