“Littles Law is a theorem that determines the average number of items in a stationary queuing system, based on the average waiting time of an item within a system and the average number of items arriving at the system per unit of time.”
Littles Law allows us to assess the efficiency of queuing systems and is defined by:
Where:
· L – the average number of items in a queuing system
· Λ - the average number of items arriving at the system per unit of time
· W – The average waiting time an item spends in a queuing system
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