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Responsive Roll-Forward Recovery in Embedded Real-Time Systems

Lookup NU author(s): Professor Brian Randell

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Abstract

Roll-forward checkpointing schemes are developed in order to avoid rollback in the presence of independent faults and increase the possibility that a task completes within a tight deadline. Despite of the adoption of roll-forward recovery, these schemes are not necessarily appropriate for time-critical applications because interactions with the external environment and communications between processes must be deferred during checkpoint validation steps (typically, two checkpoint intervals) until the fault-free processors are identified. The deadlines on providing services may thus be violated. In this paper we present and discuss two alternative roll-forward recovery schemes, especially for time-critical and interaction-intensive applications, that deliver correct, timely results even when checkpoint validation is required.


Publication metadata

Author(s): Xu J, Randell B

Publication type: Report

Publication status: Published

Series Title: Department of Computing Science Technical Report Series

Year: 1995

Pages: 18

Report Number: 515

Institution: Department of Computing Science, University of Newcastle upon Tyne

Place Published: Newcastle upon Tyne

URL: http://www.cs.ncl.ac.uk/publications/trs/papers/515.pdf


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