The recent development of high-speed communication networks has led to great interest in client-server environments. In this context it is becoming increasingly important to have adequate tools to support the study of the behaviour and size of the various parts of these systems. This paper provides a systematic approach to modelling and assessing a particular class of systems - fault-tolerant parallel/distributed systems - which feature a capacity to reconfigure dynamically on the occurrence of partial faults, so as to guarantee a certain level of performance, albeit a reduced one. Using the formalism offered by Petri Nets, the paper presents combined measures of dependability and performance which identify the behaviour of the system in as complete a way as possible, above all in relation to fault/repair phenomena.
Evaluation of Performability Parameters in Client-Server Environments
PULIAFITO, Antonio;SCARPA, Marco Lucio
1996-01-01
Abstract
The recent development of high-speed communication networks has led to great interest in client-server environments. In this context it is becoming increasingly important to have adequate tools to support the study of the behaviour and size of the various parts of these systems. This paper provides a systematic approach to modelling and assessing a particular class of systems - fault-tolerant parallel/distributed systems - which feature a capacity to reconfigure dynamically on the occurrence of partial faults, so as to guarantee a certain level of performance, albeit a reduced one. Using the formalism offered by Petri Nets, the paper presents combined measures of dependability and performance which identify the behaviour of the system in as complete a way as possible, above all in relation to fault/repair phenomena.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.