Abstract
This paper deals with the three classic policies for an M/G/1 queueing system (N, T andD-policy). The optimum policies were compared in several precedent studies, but the comparison was performed employing different cost functions, so theD-policy is superior to theN-policy when the cost function is based in the mean work-load, whilst the average queue length is used to show the superiority of theN-policy over theT-policy. In order to achive a comparison of the three policies under a unified criterion we will compare the three policies twice employing both cost functions. We will conclude that theT-policy optimumN andD policies depends on the employed cost function.
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