Reference Model:

• Basic Queuing System:
  • 
  • incoming entity chooses shortest queue
  • two basic tasks
    • 100 entities, deterministic
    • 500 entities, stochastic
  • optional: two orders of concurrent events
    • entity leaves server / queued entity enters server / new entity chooses a queue
    • new entity chooses a queue / entity leaves server / queued entity enters server
  • optional: 40 queues/servers