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Quantification and compensation of the impact of faults in system throughput

Author

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  • Ricardo J Rodríguez
  • Jorge Júlvez
  • José Merseguer

Abstract

Performability relates the performance (throughput) and reliability of software systems whose normal behaviour may degrade owing to the existence of faults. These systems, naturally modelled as discrete event systems using shared resources, can incorporate fault-tolerant techniques to mitigate such a degradation. In this article, compositional fault-tolerant models based on Petri nets, which make its sensitive performability analysis easier, are proposed. Besides, two methods to compensate existence of faults are provided: an iterative algorithm to compute the number of extra resources needed, and an integer-linear programming problem that minimises the cost of incrementing resources and/or decrementing fault-tolerant activities. The applicability of the developed methods is shown on a Petri net that models a secure database system.

Suggested Citation

  • Ricardo J Rodríguez & Jorge Júlvez & José Merseguer, 2013. "Quantification and compensation of the impact of faults in system throughput," Journal of Risk and Reliability, , vol. 227(6), pages 614-628, December.
    • Handle: RePEc:sae:risrel:v:227:y:2013:i:6:p:614-628
    DOI: 10.1177/1748006X13492284
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    Cited by:

    1. Hu, Bin & Seiler, Peter, 2015. "Pivotal decomposition for reliability analysis of fault tolerant control systems on unmanned aerial vehicles," Reliability Engineering and System Safety, Elsevier, vol. 140(C), pages 130-141.

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