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Real-Time Guarantees in Flexible Advance Reservations

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5 Author(s)
Konstanteli, K. ; Nat. Tech. Univ. of Athens, Athens, Greece ; Kyriazis, D. ; Varvarigou, T. ; Cucinotta, T.
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This paper deals with the problem of scheduling workflow applications with quality of service (QoS) constraints, comprising real-time and interactivity constraints, over a service-oriented grid network. A novel approach is proposed, in which high-level advance reservations, supporting flexible start and end time, are combined with low-level soft real-time scheduling, allowing for the concurrent deployment of multiple services on the same host while fulfilling their QoS requirements. By undertaking a stochastic approach, in which a-priori knowledge is leveraged about the probability of activation of the application workflows within the reserved time-frame, the proposed methodology allows for the achievement of various trade-offs between the need for respecting QoS constraints (user perspective) and the need for having good resource saturation levels (service provider perspective).

Published in:

Computer Software and Applications Conference, 2009. COMPSAC '09. 33rd Annual IEEE International  (Volume:2 )

Date of Conference:

20-24 July 2009