移动计算环境下可配置的卷回恢复算法

Adaptive rollback-recovery algorithm for mobile computing environment

设计了一种可配置的卷回恢复算法,算法将检查点分别存储在移动节点本地磁盘和移动支持站上的可靠存储器,用低费用的检查点容忍出现频率较高的错误,而用高代价的检查点容忍出现频率较低的错误。算法降低了无线网络负载和能耗,减少了采取检查点和错误恢复的迟延,并根据环境动态配置,可降低算法平均开销率。

This paper designs an adaptive rollback -recovery algorithm for mobile computing environment. This algorithm, saves checkpoints to local - disks of mobile host and stable storage of mobile support station respectively. It is with low - cost checkpoint strategy to cope with the high frequency faults. While .with the high - cost to tolerant the low will with the low frequency faults. It reduces the wireless network load, energy consumption and the delay of checkpoint and rollback recovery. According to the environment, it reduces the dynami average c configuration in overhead rate.