NDLI: Simulation analysis of a dynamic checkpointing strategy for real-time systems

Content Provider	IEEE Xplore Digital Library
Author	Ranganathan, A. Upadhyaya, S.J.
Copyright Year	1994
Description	Author affiliation: Dept. of Electr. & Comput. Eng., State Univ. of New York, Buffalo, NY, USA (Ranganathan, A.; Upadhyaya, S.J.)
Abstract	The performance of a fault tolerant real-time system is measured by its ability to meet deadlines in the presence of errors. Checkpointing and rollback recovery is an effective technique to tolerate transient and intermittent faults in real-time systems. Several strategies exist for checkpointing which can be broadly classified as static and dynamic. In static checkpointing, the checkpointing intervals are determined before the program execution and remain fixed until the program terminates. On the other hand, in a dynamic checkpointing strategy, the checkpointing interval is varied dynamically during program execution based on certain criteria. This paper presents a comparative study of the performance of real-time systems adopting various rollback recovery strategies. A new dynamic checkpointing strategy is presented, which integrates the deadline constraints and variable error rate in determining the checkpointing interval. The main idea behind this approach is to dynamically modify the inter-checkpointing interval during the execution of a task such that the online computation associated with checkpointing and recovery is minimized. Simulation study indicates that the proposed technique outperforms the rollback recovery techniques based on equidistant (static) checkpointing. The generic simulation tool developed to compare various rollback recovery strategies is also described.
Starting Page	181
Ending Page	187
File Size	749353
Page Count	7
File Format	PDF
ISBN	0818656204
DOI	10.1109/SIMSYM.1994.283098
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-11
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Checkpointing Real time systems Process control Error analysis Computational modeling Fault tolerant systems Job shop scheduling Databases Electric variables measurement
Content Type	Text
Resource Type	Article

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