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LOW OVERHEAD FAULT TOLERANCE THROUGH HYBRID CHECKPOINTING AND REPLAY
LOW OVERHEAD FAULT TOLERANCE THROUGH HYBRID CHECKPOINTING AND REPLAY
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机译:通过混合检查点和回放的开销开销低
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摘要
A virtualized computer system provides fault tolerant operation of a primary virtual machine. In one embodiment, this system includes a backup computer system that stores a snapshot of the primary virtual machine and a log file containing non-deterministic events occuring in the instruction stream of the primary virtual machine. The primary virtual machine periodically updates the snapshot and the log file. Upon a failure of the primary virtual machine, the backup computer can instantiate a failover backup virtual machine by consuming the stored snapshot and log file.
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