Danilo Ardagna

This section of the Web site reports PhD theses available. General information on Doctoral studies at Politecnico are available at the DEI Web site. Interested candidates should contact me by e-mail.

Active Energy Management of Service Centers Infrastructures

Energy management is rapidly becoming a priority in the design and operation of complex service-based information systems, as the impact of energy consumption associated with IT infrastructures increases. The thesis aims at introducing a novel interdisciplinary approach for the development of advanced active energy-aware policies for the management of modern IT infrastructures based on expertise from several research areas: Web service technologies, optimization, performance evaluation, model identification, robust, and predictive control.

Dynamic management of virtualized systems

In order to reduce the operating costs of IT systems, nowadays service applications are executed in virtualized infrastructures and a time varying fraction of the physical servers' capacity is shared among running applications. The performance modelling of a virtualized server is very challenging as the impact of the choice of the Virtual Machine Monitor scheduler, its parameters and I/O management overhead is still only partially understood. The thesis aims at developing a framework for the performance estimation and dynamic management of virtualized systems.

Relevant Publications

• J. Almeida, V. Almeida, D. Ardagna, I. Cunha, C. Francalanci, M. Trubian. Joint Admission Control and Resource Allocation in Virtualized Servers. Journal of Parallel and Distributed Computing, Elsevier A. To appear.
• D. Ardagna, M. Trubian, L. Zhang. SLA Based Resource Allocation Policies in Autonomic Environments. Journal of Parallel and Distributed Computing. 67, 259-270, Elsevier, 2007.
• M. Tanelli, D. Ardagna, M. Lovera, L. Zhang. Model Identification for Energy-aware Management of Web Service Systems. ICSOC 2008 Proceedings, 599-606, Sydney, Australia, December 2008.
• D. Ardagna, M. Tanelli, M. Lovera, L. Zhang. Black-box Performance Models for Virtualized Web Service Applications . Proceedings of the 1st Joint WOSP/SIPEW International Conference on Performance Engineering. WOSP/SIPEW2010. ACM DL. To appear.