Performance bottleneck on Javassist ----------------------------------- Key: AS7-5127 URL: https://issues.jboss.org/browse/AS7-5127 Project: Application Server 7 Issue Type: Bug Components: JPA / Hibernate Affects Versions: 7.1.2.Final (EAP) Environment: Sun/Oracle JDK 1.6_32, Linux 64b Reporter: Alessandro Lazarotti Assignee: Scott Marlow Fix For: 7.2.0.Alpha1 The method javassist.util.proxy.RuntimeSupport.find2methods has a synch block, called indirectly by ProxyFactory.createClass(). It is a strong bottleneck for frameworks as Hibernate which can use it several times in a large set of data. Javassist 3.17.0-GA fixes it. AS7 should update its current javassist version. More details in https://issues.jboss.org/browse/JASSIST-163