JBoss development, A new message was posted in the thread "CallbackItem.changeCallback() very expensive due to context tracking": http://community.jboss.org/message/527859#527859 Author : Kabir Khan Profile : http://community.jboss.org/people/kabir.khan@jboss.com Message: --------------------------------------------------------------   I tried in AS and it does not go through to the expensive bit after the first few beans of the bootstrap (probably the ones installed before the context tracker). I've removed that code anyway and committed against https://jira.jboss.org/jira/browse/JBKERNEL-102   It looks like the initial call is expensive, but necessary, so my benchmarks are not realistic in this case. I put in some log statements and we do get some multiple calls to scopeInfo.getMetaData() instances but the overhead is low, total of 6ms on AS startup so there is no point in caching. -------------------------------------------------------------- To reply to this message visit the message page: http://community.jboss.org/message/527859#527859