-owned data centres, making the market entry affordable only for big companies. Focusing on the reduction of entry and operational costs, we investigate a new dynamic resource provisioning method for MMOG operation using external data centres as low-cost resource providers. First, we identify in the various

funds but only $20 billion to Fidelity funds, despite the fact that Fidelity had more than three times the assets under management at the beginning of the year. Thus in 1999 retail investors as a group made an active allocation decision to give greater weight to Janus funds, and in doing so

of active rules, and to provide a framework for comparing different proposals for active database systems. The main contribution of this article is a proposal to integrate the specification of active rules with the specification of the dynamics of change (based on transactions) in relational databases. Our

FD-buffer: a buffer manager for databases on flash disks.

, and with misfit resource renting policies, the current industry practice is to maintain for each game tens of self-owned data centers. In this work we investigate the dynamic resource provisioning from external data centers for MMOG operation. We introduce a novel MMOG workload model that represents the dynamics

First, I would like to thank my advisors Prof. Gal A. Kaminka and Dr. David Sarne for their excellent guidance and constant support in the past two years. I learned quite a bit about scientific research, all thanks to their great instruction. Working with them was a real pleasure, not only on the professional level, but on the personal level as well. Thanks to my colleagues and friends from the Bar-Ilan University in general, and MAVERICK lab in particular, for the great time we had together. Special thanks to Gabriella Melamed, MAVERICK lab manager, for assisting with administra-tive issues, and in particular for helping with the arrangements for the experiment. I also wish to thank Tal-Oron Gilad from Ben-Gurion University, for providing us with a He-brew translation of the NASA-TLX questionnaire. Thanks to my dear family for their support and encouragement, and for enabling me to com-plete this work. Thanks to my girlfriend for her patience and understanding. Finally, I would like to thank my grandfather, who never ceased to encourage me throughout this journey.

Abstract: The emergence of multi-processor, multi-threaded architectures (referred to as multi- ⋆ architectures) facilitates the design of high-throughput request processing systems (e.g., multi-service routers for GENI [19], intrusion detection systems [22], graphics and gaming systems [1, 11, 17

Abstract—The emergence of multi-processor, multi-threaded architectures (referred to as multi- ⋆ architectures) facilitates the design of high-throughput request processing systems (e.g., multiservice routers for GENI [22], intrusion detection systems [25], graphics and gaming systems [1], [12

;Shared-Memory Multiprocessor Trends and the Implications for Parallel Program Performance". Technical Report 420, University of Rochester, Computer Science Department, March 1992. [22] C. McCann, R. Vaswani, and J. Zahorjan. "A Dynamic Processor Allocation Policy for Multiprogrammed Shared Memory Multiprocessors

We design and implement FD-Buffer, a buffer manager for database systems running on flash-based disks. Unlike magnetic disks, flash media has an inherent read-write asymmetry: writes involve expen-sive erase operations and as a result are usually much slower than reads. Therefore, we address