Follow these guidelines:
The queues output lists many queues. Queues that should be monitored more closely are SubscriberFE and SM_PropertyPoller.
Current size information is the most important to monitor. For most queues, this value is often 0. Some queues, such as ICS_ActionScheduler, almost always have non-zero values for current size. If the current size is not zero and grows over several successive dump queues commands, it should be further analyzed.