基于替代的嵌套事务夭折策略  

Abortion strategy of nested transaction based on function alternative

作　　者：蔡晋[1] 

机构地区：[1]江西财经大学软件与通信工程学院,南昌330013

出　　处：《计算机应用研究》2010年第11期4063-4066,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(60763002);江西省自然科学基金资助项目(2008GZS0021)

摘　　要：在支持功能替代的实时事务模型中,实时事务调度分为内部调度和外部调度两级,同时也改变了事务夭折模式。高性能的夭折策略有利于提高事务的成功率,减少不必要的资源开销。研究针对基于替代的事务模型,以及与事务两级调度策略相对应的两级夭折模式,并给出具体策略和算法。仿真实验结果表明,该方法能够较好地减少系统不必要的开销,提高系统成功率。In the model of the real-time transaction model based on function alternative,the real-time transaction scheduling can divide into the internal and external two-stage schedule,simultaneously also it changes the transaction abortion mode.It can improve the transaction success ration and reduce the unnecessary resource overhead through studying the abortion strategy based functional alternative.This paper studied the new transaction model,proposed a two-stage abortion method according to the two-stage schedule strategy,discussed the inner and outer abortion strategy in detail,and provided the specific algorithm.The result of simulation experiment shows that this method can reduce unnecessary overhead and enhance the success ration of transaction system.

关 键 词：实时事务系统 功能替代模型 两级夭折策略 

分 类 号：TP316[自动化与计算机技术—计算机软件与理论]