Feedback Control with Queueing-Theoretic Prediction for Relative Delay Guarantees in Web Servers
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Controlling the timing performance of a network server is a challenging problem. This paper presents a Queueing Model Based Feedback Control approach to keep the timing performance of a network server close to the service level specification. We show that in an instrumented Apache server, combining feedback control with a queueing model leads tobetter tracking of QoS specifications than with feedback control alone or queueing model based feed forward control alone.