More frequent full GC after upgrading an application

Solution Unverified - Updated -

Issue

  • After upgrading A-MQ from 5.4 to 5.9, getting more frequent full GC than before
  • JVM parameter tuning has been broken after upgrade
  • More and more objects are getting promoted from young to old generation
  • From a heap dump, so many objects are living in finalizer thread

Environment

  • Java in general
  • Red Hat JBoss A-MQ 6.1.0

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