Istituto di Scienza e Tecnologie dell'Informazione     
Romano L., Bondavalli A., Chiaradonna S., Cotroneo D. Implementation of threshold-based diagnostic mechanisms for COTS-based applications. In: IEEE SRDS2002. Reliable Distributed Systems (Japan, October 2002). Proceedings, pp. 296 - 303. IEEE, 2002.
This work investigates feasibility issues that must be addressed when threshold-based mechanism are to be used for diagnostic purposes in COTS-based distributed systems. Threshold based mechanism have typically been used for such purposes in embedded systems. A variety of solutions exist, with different characteristics of completeness, accuracy, and induced overhead. We first discuss the challenges related to applying such mechanisms to COTS-based distributed applications. We then identify alternative strategies for diagnosis, which use run-time data on COTS component service failures to trigger alarms to reconfiguration and fault treatment mechanisms. We implement those strategies in a system prototype, which is based on a substantial application, i.e. a real world (as opposed to a
Subject threshold mechanisms
distributed architectures
legacy systems

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