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<p><b>Abstract</b>—Performance and reliability trade-offs depend on the recovery scheme used in any fault-tolerant system. Gain in performance, using comparable resources, typically requires sacrifice in reliability, and vice-versa. Roll-forward schemes for duplex systems achieve better performance than rollback schemes, without a significant increase in hardware resource requirements. This paper compares two roll-forward schemes with two roll-back schemes. It is shown that the roll-forward schemes improve performance with only a small loss in reliability as compared to rollback schemes.</p>
Checkpointing, duplex systems, performance, reliability, roll-forward.
Dhiraj K. Pradhan, Nitin H. Vaidya, "Roll-Forward and Rollback Recovery: Performance-Reliability Trade-Off", IEEE Transactions on Computers, vol. 46, no. , pp. 372-378, March 1997, doi:10.1109/12.580435
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