Abstract
Distributed Computing and Networking In this paper, we focus on applications having quantitative QoS (Quality of Service) requirements on their end-to-end response time (or jitter). We propose a solution allowing the coexistence of two types of quantitative QoS garantees, deterministic and probabilistic, while providing a high resource utilization. Our solution combines the advantages of the deterministic approach and the probabilistic one. The deterministic approach is based on a worst case analysis. The probabilistic approach uses a mathematical model to obtain the probability that the response time exceeds a given value. We assume that flows are scheduled according to non-preemptive FP/FIFO. The packet with the highest fixed priority is scheduled first. If two packets share the same priority, the packet arrived first is scheduled first. We make no particular assumption concerning the flow priority and the nature of the QoS guarantee requested by the flow. An admission control derived from these results is then proposed, allowing each flow to receive a quantitative QoS guarantee adapted to its QoS requirements. An example illustrates the merits of the coexistence of deterministic and probabilistic QoS guarantees.
Highlights
To cite this version: Pascale Minet, Steven Martin, Leila Azouz Saidane, Skander Azzaz
We propose a solution allowing the coexistence of two types of quantitative QoS guarantees, deterministic and probabilistic, while providing high resource utilization
An admission control derived from these results is proposed, allowing each flow to receive a quantitative QoS guarantee adapted to its QoS requirements
Summary
We are interested in providing quantitative QoS (Quality of Service) guarantees to various types of applications in their end-to-end response time (or jitter). The admission control presented in this paper will allow us to accept more flows and will offer to each of them a quantitative QoS guarantee in accordance with its requirements. Notice that there is no relationship between the nature of the QoS guarantee required by a flow (deterministic or probabilistic) and its fixed priority.
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