A resource-allocation queueing fairness measure
Proceedings of the joint international conference on Measurement and modeling of computer systems
Classifying scheduling policies with respect to higher moments of conditional response time
SIGMETRICS '05 Proceedings of the 2005 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
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The variance of customer sojourn time (or waiting time) is used, either explicitly or implicitly, as an indication of fairness for as long as queueing theory exists. In this work we demonstrate that this quantity has a disadvantage as a fairness measure, since it is not local to the busy period in which it is measured. It therefore may account for customer discrepancies which are not relevant to fairness of scheduling. We show that RAQFM, a recently proposed job fairness measure, does possess such a locality property. We further show that within a large class of fairness measures RAQFM is unique in possessing this property.