一种基于移动计算环境的并发控制策略  

Concurrency Control Strategy Based on Mobile Computing Environment

作　　者：谭鹏[1] 王磊[1] 

机构地区：[1]西安理工大学计算机科学与工程学院,陕西西安710048

出　　处：《微电子学与计算机》2009年第7期147-150,155,共5页Microelectronics & Computer

基　　金：国家自然科学基金项目(60603026)

摘　　要：针对移动计算环境中传统的并发控制机制并不足以支持移动事务执行的问题,提出一种新的事务管理机制以提高移动事务的处理效率.文中着重研究移动事务的并发控制机制,提出了一种基于动态计时器机制的并发控制策略.该策略主要是在锁管理器中添加动态计时器,通过调整事务执行队列以及动态的分配事务执行时间,达到减少事务的重启次数,提高事务提交率的目的.性能测试表明,所提出的并发控制策略能提高移动计算环境下事务的成功率.For the problem that traditional concurrency protocols are incompetent to support the execution of mobile transactions in mobile computing environment, this paper designs a new transaction management mechanism to improve processing efficiency for mobile transactions. The paper focused on concurrency control mechanism of mobile transactions and proposed a concurrency control strategy based on dynamic timer. By increasing the dynamic timer in the lock manager, adjusting the transaction queues and allocating the execution time of transactions dynamically, this strategy reduced the communication overhead and enhanced the commit rates of transactions. The performance tests showed that the proposed concurrency control mechanism greatly improved the commit rate of transactions in mobile computing environment.

关 键 词：移动计算环境 并发控制 动态计时器 提交率 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]