Cause: Opening and closing many hundreds of connections to the directory server per minute for a long period of time.
Consequence: The directory server memory growth will be unbounded until killed by the OOM killer.
Fix: The directory server was not properly cleaning up and freeing the memory used by old connections. The fix is to clean up this memory properly.
Result: The directory server memory usage should level off and not increase any more once the entry/dn/db caches are full.