How do I measure long wait times?

[alancantrell]

I can see average wait times but need to measure wait times over a threshold. I would think there would be an attribute of ModelEntity such as TimeInSystem or TimeNow. I can't tell how to measure from entering the queue to leaving the queue using standard library objects. Do I have to model this entirely with processes?

Thanks.

[dsturrock]

Look at SimBit KeepQueueTimeForLast10Entities. While this actually does much more than what you need to do, the basic approach is the same.

Essentially just before an entity enters a queue (Entered process) you record the time on an entity state. Then when you leave the queue (BeforeProcessing process) you calculate the time it spent n the queue and if it exceeds the threshold, then you record it in a Tally.

[alancantrell]

Thanks Dave.