Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7124
Título: Passive Fault-Tolerance Management in Component-based Embedded Systems
Autor: Nogueira, Luis Miguel
Coelho, Jorge
Palavras-chave: Component-based systems
Embedded real-time systems
Coordination model
Fault-tolerance
Passive replication
Data: 2015
Editora: Slovak Academy of Sciences
Relatório da Série N.º: Computing and Informatics;Vol. 35
Resumo: It is imperative to accept that failures can and will occur, even in meticulously designed distributed systems, and design proper measures to counter those failures. Passive replication minimises resource consumption by only activating redundant replicas in case of failures, as typically providing and applying state updates is less resource demanding than requesting execution. However, most existing solutions for passive fault tolerance are usually designed and configured at design time, explicitly and statically identifying the most critical components and their number of replicas, lacking the needed flexibility to handle the runtime dynamics of distributed component-based embedded systems. This paper proposes a cost-effective adaptive fault tolerance solution with a significant lower overhead compared to a strict active redundancy-based approach, achieving a high error coverage with the minimum amount of redundancy. The activation of passive replicas is coordinated through a feedback-based coordination model that reduces the complexity of the needed interactions among components until a new collective global service solution is determined, improving the overall maintainability and robustness of the system.
Peer review: yes
URI: http://hdl.handle.net/10400.22/7124
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