A Resource Management Framework for Predictable Quality of Service in Web Servers

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This paper presents a resource management framework for providing predictable quality of service in Web servers. The framework allows Web server and proxy operators to ensure a minimal quality of service, expressed as an average request rate or average response time, for a certain class of requests (called a service), irrespective of the load imposed by other requests. A measurement-based admission control framework determines whether a service can be hosted on a given server or proxy, based on the measured statistics of the resource consumptions and the desired QoS levels of all the co-located services.