QoS and energy management with Petri nets: A self-adaptive framework |
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Authors: | Diego Perez-Palacin Raffaela Mirandola José Merseguer |
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Affiliation: | 1. School of Computer Science and Technology, Jilin University, Str. Qianjin 2699, Changchun 130012, China;2. Library of Changchun University, Rd. Weixing 6543, Changchun 130022, China |
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Abstract: | Energy use is becoming a key design consideration in computing infrastructures and services. In this paper we focus on service-based applications and we propose an adaptation framework that can be used to reduce power consumption according to the observed workload. The adaptation guarantees a trade-off between energy consumption and system performance. The approach is based on the principle of proportional energy consumption obtained by scaling down energy for unused resources, considering both the number of servers switched on and their operating frequencies. Stochastic Petri nets are proposed for the modeling of the framework concerns, their analyses give results about the trade-offs. The application of the approach to a simple case study shows its usefulness and practical applicability. Finally, different types of workloads are analyzed with validation purposes. |
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