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On the availability of a distributed computer system with failing components

Published: 01 August 1985 Publication History

Abstract

We present a model for distributed systems with failing components. Each node may fail and during its recovery the load is distributed to other nodes that are operational. The model assumes periodic checkpointing for error recovery and testing of the status of other nodes for the distribution of load.
We consider the availability of a node, which is the proportion of time a node is available for processing, as the performance measure. A methodology for optimizing the availability of a node with respect to the checkpointing and testing intervals is given. A decomposition approach that uses the steady-state flow balance condition to estimate the load at a node is proposed. Numerical examples are presented to demonstrate the usefulness of the technique. For the case in which all nodes are identical, closed form solutions are obtained.

References

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F. Baccelli, "Analysis of a service facilit),. with periodic checkpointing", Acta Inf. 15 ( 198 ~), 67-8 ~.
[2]
P. Bouchet, "Procadures de reprise dans ies syst~mes de gestion de base de donn6es r6parties", Acta Inf. ii (1979), 305-340.
[3]
K.M. Chandy and C.V. Ramamoorthy, "Rollback and recovery strategies for computer programs", IEEE Trans. Comput. 6 (1972), 546- 556.
[4]
K.M. Chandy, "A survey of analytic models of rollback and recovery strategies", Computer 5 (1975), 40-47.
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K.M. Chandy, J.C. Browne, .C.W. Dissly and W.R. Uhrig, "Analytical models for rollback and recovery strategies in data base systems", IEEE Trans. Software Eng. I (1975), 100-110.
[6]
E. Gelenbe and D. Derochette, "Performance of rollback recovery systems under intermittent failures", Cornmun. ACM 21 (1978), 493- 499.
[7]
E. Gelenbe, "On the optimum checkpoint interval", J. ACM 26 (1979), 259-270.
[8]
C.M. Krisna, K.G. Shin and Y.-H. Lee, "Optimization criteria for checkpoint placement", Commun. ACM 27 (1984), 1008-1012.
[9]
S.K. Tripathi, D. Finkel, E. Gelenbe, "Load sharing in distributed systems with failures", ISEM Research Report no. 30, Universit~ de Paris- Sud, Orsay, March 1985.

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cover image ACM Conferences
SIGMETRICS '85: Proceedings of the 1985 ACM SIGMETRICS conference on Measurement and modeling of computer systems
August 1985
203 pages
ISBN:0897911695
DOI:10.1145/317795
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Association for Computing Machinery

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Published: 01 August 1985

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