How to clean up tmp dir in JBoss EAP 5.x when shutdown

Issue

• The number of files and directories under $JBOSS_HOME/server/$PROFILE/tmp/ increases every time the JBoss instance is restarted.

• How to clean up those files and directories?

• Need recomendation on what to do with these files, should they be cleaned up, if so when ?

• Everytime stop/start the JBoss server the vfs cache located under $JBOSS_HOME/server/$PROFILE/tmp/ does not cleaned up. Are there any settings/options to set so that the vfs cache can be cleaned up on stop/start? What can be done to control the size of the vfs cache in JBoss EAP 5.x?