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Erschienen in:
2022 | OriginalPaper | Buchkapitel
Optimal Design of Checkpoint Systems with General Structures, Tasks and Schemes
verfasst von : Kenichiro Naruse, Toshio Nakagawa
Erschienen in: Reliability and Maintainability Assessment of Industrial Systems
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Abstract
This chapter proposes some kinds of checkpoint systems with general structures, tasks and schemes. We have already considered redundancy techniques which are duplex and majority systems, and have applied them to two checkpoint models in which their interval times are constant and random. Giving overheads for checkpoints, we have obtained the mean execution times until the process succeeds, and have derived optimal checkpoint times to minimize them. In this chapter, we first introduce the standard checkpoint model, and propose general checkpoint models which include parallel, series and bridge systems. Furthermore, we consider tandem and bulk tasks, and apply them to two schemes and compare optimal policies theoretically and numerically. Finally, as examples of the above models, we give four models, obtain their mean execution times analytically and discuss which scheme is better numerically.