There are several schemes for checkpointing and rollback recovery. In this paper, we analyze some such schemes under a stochastic model. We have found expressions for average cost of checkpointing, rollback recovery, message logging and piggybacking with application messages in synchronous as well as asynchronous checkpointing. For quasi-synchronous checkpointing we show that in a system with n processes, the upper bound and lower bound of selective message logging are O(n~2) and O(n) respectively.
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