Service differentiating algorithms for QoS-enabled web servers

Authors:
Ottone Alexandre Traldi;Alessandra Kelli Barbato;Regina H. C. Santana
Affiliations:
Universidade de São Paulo, São Carlos, SP, Brasil;Universidade de São Paulo, São Carlos, SP, Brasil;Universidade de São Paulo, São Carlos, SP, Brasil
Venue:
WebMedia '06 Proceedings of the 12th Brazilian Symposium on Multimedia and the web
Year:
2006

Citing 5
Cited 1

A generalized processor sharing approach to flow control in integrated services networks: the single-node case

IEEE/ACM Transactions on Networking (TON)
Quality of service: delivering QoS on the Internet and in corporate networks

Quality of service: delivering QoS on the Internet and in corporate networks
Web switch support for differentiated services

ACM SIGMETRICS Performance Evaluation Review
A Cluster-Based Web System Providing Differentiated and Guaranteed Services

Cluster Computing
Web server QoS models: applying scheduling rules from production planning

Computers and Operations Research

An orthogonal real-time scheduling architecture for responsiveness QoS requirements in SOA environments

Proceedings of the 2009 ACM symposium on Applied Computing

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper presents and compares two algorithms for differentiated services, aiming at providing Quality of Service (QoS) to Web servers: the Adaptive Resources Reservation (RSVAdap) and the Weighted Fair Queuing (WFQ). The RSVAdap consists in partitioning the resources of the system in an adaptive way, and the WFQ is based on the Weighted Fair Queuing algorithm mechanism, used for the network layer. The algorithms were built into a Web-server model with service differentiation and simulated, considering different parameters and configurations for the system. The results indicate the situations in which the algorithms can offer differentiated services and those in which their particularities are emphasized, explaining the applicability of the algorithms in varied workload situations.Neste artigo, são propostos e comparados dois algoritmos de diferenciação de serviços para o fornecimento de qualidade de serviço (QoS) em servidores Web: o Reserva Adaptativa de Recursos (RSVAdap) e o Weighted Fair Queuing (WFQ). O RSVAdap consiste na reserva adaptativa de recursos do servidor e o WFQ baseia-se no funcionamento do algoritmo Weighted Fair Queuing, existente para a camada de rede. Os algoritmos foram inseridos em um modelo de servidor Web com diferenciação de serviços e simulados considerando-se diferentes parâmetros e configurações para o sistema. Os resultados mostram as situações em que os algoritmos conseguem prover a diferenciação de serviços e aquelas em que as suas particularidades são destacadas, elucidando a aplicabilidade dos algoritmos nas mais variadas situações de carga de trabalho.