Predicting violations of QoS requirements in distributed systems

Abstract

A Quality of Service (QoS) requirement refers to a non-functional requirement such as performance. A QoS management system allocates and schedules computing resources. A dynamic QoS management system is one that dynamically allocates resources to an application during its lifetime. This is usually done when the application has a QoS requirement that is not being satisfied at run-time. Ideally, the QoS management system is able to predict when the QoS requirement will be violated before it is violated. This paper describes an approach to prediction and hows shows how this was applied to a case study. © IFIP International Federation for Information Processing 2003.