Servidor Web com Diferenciação de Serviços: Fornecendo QoS para os Serviços da Internet

Mário TeixeiraMarcos SantanaRegina Santana

Our work proposes an architecture for a web server capable of providing differentiated services to its clients according to their demand characteristics. The architecture is validated by means of a simulation model and real web server traces are used for workload generation. We have designed and implemented two priority-based service differentiating mechanisms in this architecture with very promising results. Our server also deals with admission control issues, in order to prevent system overload when user demand rises unexpectedly. Our results have been compared both with and without overload control, so as to assess its influence on overall server performance. Overload control has proved to be a fundamental feature to assure system stability as well as the quality of service contracted by the clients.

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Biblioteca Digital Brasileira de Computação - Contato:
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