Simulação de filas Gi/G/m e verificação de aproximações destas por filas Ph/Ph/m / GI/G/m queueing simulation and GI/G/m queue approximations for Ph/Ph/m queues

AUTOR(ES)
DATA DE PUBLICAÇÃO

1998

RESUMO

The performance evaluation of a GI/G/m queueing system is a classic hard problem. These multi-server queues are notoriously difficult to be evaluated analytically and, a analytic solutions is possible only for special cases, just as the queues M/M/m, M/D/m, M/K2 /m, GI/H2/m, GI/EK/m, GI/Ph/m, Ph/D/m e Ph/Ph/m. The computer simulation models, despite of requiring many hardware resources (work memory, storage memory, processing speed of the CPU) and consuming large amount of computer times in the execution of the simulation runs, allow the evaluation of more realistic models. The computer simulation models can be convenient enough to check the validity of assumptions needed in an analytic model and to check the results of the analytic model. This study deals with the estimation of steady-state (long-run) measures of performance for GI/G/m queueing systems through simulation models. It also checks the GI/G/m queues approximations by Ph/Ph/m queues.

ASSUNTO(S)

simulação de filas sistemas de filas aproximações de sistemas de filas medidas de congestão validação e verificação de simulações processos estocásticos simulação

ACESSO AO ARTIGO

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