A QoC-based model for performance and QoE trade-off in distributed systems
| Autor: | Andre Luiz Tinassi D'Amato, Mario A. R. Dantas |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Computer Networks and Communications
Computer science Distributed computing media_common.quotation_subject 020206 networking & telecommunications Throughput Context (language use) 02 engineering and technology Trade-off Computer Science Applications Theoretical Computer Science Computational Theory and Mathematics Order (exchange) 0202 electrical engineering electronic engineering information engineering Resource allocation 020201 artificial intelligence & image processing Quality (business) Quality of experience Software media_common |
| Zdroj: | Concurrency and Computation: Practice and Experience. 29:e4202 |
| ISSN: | 1532-0626 |
| DOI: | 10.1002/cpe.4202 |
| Popis: | Summary This paper proposes a quality of context (QoC)–based model to enhance trade-off between system performance and users quality of experience (QoE) in distributed systems. The QoE considers the users subjective perceptions of quality on technology services and depends on context attributes related to the users expectations. In addition, context information can be used to improve performance in context-aware systems. Therefore, the QoC-based model proposed in this paper aims to establish performance and QoE trade-off for resource allocation in distributed systems. With the massive data growth over the past years, the demand for computing capacity has been notably growing in a proportional way. In view of that, the demand for distributed systems has also increased significantly due to the advantages of distributed computing such as cost-benefit gains, large processing capacity, and an extensive capability for resources sharing. In this sense, the large-scale utilization of distributed systems has generated problems concerning resource allocation because of the heterogeneous characteristics and continuous evolution of distributed computational devices, resulting in several challenges in terms of environment performance and users' satisfaction trade-off. The model conceived in this paper provides for an experimental evaluation considering performance and QoE trade-off by means of simulations. Simulations were performed in order to study complex distributed systems scenarios. Experimental results showed that the proposed QoC model policy has an enhanced performance in comparison with classical approaches. |
| Databáze: | OpenAIRE |
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