JBoss slows after 24 hours for no apparent reason

Solution Verified - Updated -

Issue

  • Our JBoss server mysteriously slows after a day or so for no apparent reason. There is no resource contention (no high memory, swapping, CPU, or heavy disk usage), no GC issues, and no threads persisting in blocks, waits or sleeps. Threads remain runnable with available CPU time but despite that everything is considerably slower.

Environment

  • Red Hat JBoss Enterprise Application Platform (EAP) 6.x
  • Java 7

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