一种支持补偿任务的实时事务处理策略CP-TPS

A Processing Strategies to Support Compensation Task

触发外部设备的实时事务执行失败时,需要补偿来消除外部影响.针对支持补偿性的实时数据库模型,研究了实时事务的补偿处理策略CP-TPS,将主任务划分为I级、II级和III级三种级别,当主任务夭折时,针对不同级别的任务进行不同的补偿处理.实验结果表明,系统采用CP-TPS策略之后,可以降低任务的截止期错失率,并提高累积价值收益.

Trigger an external device to perform real-time transaction fails to eliminate the need to compensate for external influences. For real-time database support compensatory model ,deal with the strategy CP-TPS of the compensation of real-time transactions, the main task is divided into grade I, II and III three levels, died when the main task for different tasks at different levels of compensation processing. Experimental results show that after the system using CP-TPS strategy can reduce the deadline miss ratio tasks and increase the cumulative value gain.