Reneging Queues

• Reneging:
  • entity leaves a queue prematurely, e. g. after a maximal waiting time
    • 
  • examples
    • impatient customer
    • cooled work piece has to go back to the oven
    • shelf life of a sausage has expired
• Benchmark task:
  • reference model + reneging after fixed time (both versions)
  • problem
    • how to detach an arbitrary entity from the queue