Automatica (Journal of IFAC) - Special issue on statistical signal processing and control
Self-scheduled H∞ control of linear parameter-varying systems: a design example
Automatica (Journal of IFAC)
Managing energy and server resources in hosting centers
SOSP '01 Proceedings of the eighteenth ACM symposium on Operating systems principles
The Vision of Autonomic Computing
Computer
Sharc: Managing CPU and Network Bandwidth in Shared Clusters
IEEE Transactions on Parallel and Distributed Systems
SLA based profit optimization in autonomic computing systems
Proceedings of the 2nd international conference on Service oriented computing
Load prediction models in web-based systems
valuetools '06 Proceedings of the 1st international conference on Performance evaluation methodolgies and tools
Analytic modeling of multitier Internet applications
ACM Transactions on the Web (TWEB)
Adaptive overload control for busy internet servers
USITS'03 Proceedings of the 4th conference on USENIX Symposium on Internet Technologies and Systems - Volume 4
Coordinating Multiple Autonomic Managers to Achieve Specified Power-Performance Tradeoffs
ICAC '07 Proceedings of the Fourth International Conference on Autonomic Computing
Power and Performance Management of Virtualized Computing Environments Via Lookahead Control
ICAC '08 Proceedings of the 2008 International Conference on Autonomic Computing
ICAC '06 Proceedings of the 2006 IEEE International Conference on Autonomic Computing
Injecting realistic burstiness to a traditional client-server benchmark
ICAC '09 Proceedings of the 6th international conference on Autonomic computing
Survey Constrained model predictive control: Stability and optimality
Automatica (Journal of IFAC)
Quasi-Min-Max MPC algorithms for LPV systems
Automatica (Journal of IFAC)
Performance management for cluster-based web services
IEEE Journal on Selected Areas in Communications
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The complexity of Information Technology (IT) systems is steadily increasing. System complexity has been recognised as the main obstacle to further advance of IT and has recently raised energy management issues. Control techniques have been proposed and successfully applied to design Autonomic Computing systems, i.e., systems able to manage themselves trading-off system performance with energy saving goals. As users behaviour is highly time varying and workload conditions can change substantially within the same business day, the Linear Parametrically Varying (LPV) framework seems very promising for modeling such systems. In this paper, a control theoretic method to investigate the trade-off between Quality of Service (QoS) requirements and energy saving objectives in the case of admission control in Web service systems is proposed. First, a dynamic model of the admission control dynamics is estimated via LPV identification techniques. Secondly, an optimisation problem within the Model Predictive Control (MPC) framework is setup, based on the estimated LPV model, by means of which it is possible to investigate the optimal trade-off policy to manage QoS and energy saving objectives.