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计算机工程 ›› 2010, Vol. 36 ›› Issue (15): 57-59. doi: 10.3969/j.issn.1000-3428.2010.15.020

• 软件技术与数据库 • 上一篇    下一篇

基于功能替代模型的无冲突并发控制协议

夏家莉,韩增波,陈 辉   

  1. (江西财经大学软件学院,南昌 330012)
  • 出版日期:2010-08-05 发布日期:2010-08-25
  • 作者简介:夏家莉(1965-),女,教授、博士、博士生导师,主研 方向:实时数据库系统,实时系统,软件工程;韩增波,硕士研究生;陈 辉,讲师、博士
  • 基金资助:
    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)

Conflict-free Concurrency Control Protocol Based on Function Alternative Model

XIA Jia-li, HAN Zeng-bo, CHEN Hui   

  1. (School of Software, Jiangxi University of Finance and Economics, Nanchang 330012)
  • Online:2010-08-05 Published:2010-08-25

摘要: 针对周期事务的功能替代模型,支持周期事务的无冲突并发控制协议(SP-CCCP)在CCCP的基础上,增加了新事务与准活跃高优先级周期事务的相容性检测,并改进其与当前活跃事务的相容性检测性能。SP-CCCP选取无冲突的相容替代执行,提高了系统的事务成功率和CPU利用率。仿真实验表明,在资源冲突程度较大的情况下,SP-CCCP的性能优于CCCP。

关键词: 实时数据库系统, 功能替代, 周期事务, 相容替代

Abstract: Aiming at the function alternative model of the periodic transaction, Conflict-free Concurrency Control Protocol for Supporting Periodic transaction(SP-CCCP) which is based on CCCP, adds the compatible test between the new transaction and its future active periodic transaction with higher priority, and improves the performance of compatible test between the new transaction and the current active transaction. SP-CCCP selects the compatible alternative which has no conflict with other transactions, and improves success ratio of the system transaction and utilization ratio of the CPU. Simulation results show that in most situations, the performance of SP-CCCP is better than CCCP.

Key words: Real-Time Database System(RTDBS), function alternative, periodic transaction, compatible alternative

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