If your diskusage looks anything like the OP then you've most likely got a rule configuration issue.
Especially if the Rules Queue or Epic Rules Queue is maxed out like the OP then you have a few things:
- If you remember the last rule(s) you worked on disable it.
- If you don't, you can check for InternalRuleFired or InternalTestRule events to see what is triggering the most.
- If the issue's been going on for a while you can restart the manager service and then check step 2 to see what rule is running off with the LEM.
If you need any help with these steps Support will be able to assist you. Most likely it's a rule configuration/correlation causing the rule to fire too frequently and fill up the Queue.