Many threads are waiting on org.jboss.as.weld.ejb.SessionObjectReferenceImpl.getBusinessObject method in JBoss EAP 6.

Issue

• Many threads are waiting in the org.jboss.as.weld.ejb.SessionObjectReferenceImpl.getBusinessObject method. The threads are not blocked, but there is too much load for this synchronization point.

"HTTP-443" #1207 prio=9 os_prio=0 tid=0x00007f1e60120800 nid=0x10a8 waiting for monitor entry [0x00007f1de284b000]
   java.lang.Thread.State: BLOCKED (on object monitor)
    at org.jboss.as.weld.ejb.SessionObjectReferenceImpl.getBusinessObject(SessionObjectReferenceImpl.java:91)
    - waiting to lock <0x00000007919376d8> (a org.jboss.as.weld.ejb.SessionObjectReferenceImpl)
    at org.jboss.weld.bean.proxy.EnterpriseBeanProxyMethodHandler.invoke(EnterpriseBeanProxyMethodHandler.java:113)
    at org.jboss.weld.bean.proxy.EnterpriseTargetBeanInstance.invoke(EnterpriseTargetBeanInstance.java:56)
    at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105)