Archive Members Summary

Abstract: This project aims to investigate, in the first place, the steps needed for the definition of a new model suitable for mission-critical applications. The crucial aspect is timing fault-tolerance in the context of real-time systems. We intend to formalize assumptions about system timeliness, and then develop what we call a Timing Failure Detector, in order to perfectly detect all violations of timeliness. There are several ways to treat the problem afterwards, but we plan to study the use of replication to mask timing faults. Previously known failure detectors were of the crash type only, our detectors are more accurate. Besides, replication has not been used previously in the context of timing faults, and as such, this approach is innovative. Our research will therefore concentrate on the definition of a set of basic services (a Timing Failure Detection Service -TFDS, and a Replica Management Service - RMS) which aim at providing the functionality just described, by means of a suitable programming interface, with provisions for timeliness specifications. 

Sponsoring body:  PRAXIS XXI Programme of the FCT (Fundação para a Ciência e Tecnologia
Project number:  PRAXIS/P/EEI/12160/1998
Project leader:  Paulo Veríssimo (FCUL) 
Duration:  2 Years
Keywords:  Real-time, Distributed systems, Timing failure detectors, QoS

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Last updated: Novembro 09, 2000