期刊文献+

非精确计算中的实时数据库服务质量管理 被引量:2

Management of QoS in real-time database systems
在线阅读 下载PDF
导出
摘要 传统的数据库已经不能满足仿真数据库对性能优化的要求。因此,提出了非精确计算中由反馈环节控制的实时调度算法。在这些研究的基础上对该方法提出了改进,提出了使其在各种负载条件下,通过在反馈控制中设定遗忘因子以及引入最大限度数据错误的平均值来减少系统的突变,增强了系统的稳定性,提高了实时系统服务质量。 The traditional databases are inefficient for improving the performance of emulate and real-time databases.A feedback control approach with imprecise computation techniques addresses this problem.ln this paper,an improved approach is presented. By setting an appropriate forgetting factor and introducing the average value of the maximum data error,the approach aims to reduce the sudden changes so that enhance the stabilization of the systems and improve the performance of the real-time systems under a varying system workload.
出处 《计算机工程与应用》 CSCD 北大核心 2009年第34期127-129,共3页 Computer Engineering and Applications
关键词 实时数据库 服务质量 不精确计算 反馈控制 real-time database Quality of Service(QoS) imprecise computation feedback control
作者简介 刘晓静(1982-),女,硕士,主要研究领域为图像处理、仿真等; 李光耀(1965-),男,研究员,博导,主要研究领域为仿真、图像处理等; 刘宜轩(1983-),女,硕士,主要研究领域为图像处理、仿真等; 王文举(1979-),男,博士,主要研究领域为仿真、图像处理等。
  • 相关文献

参考文献3

二级参考文献20

  • 1刘云生.实时数据库系统[J].计算机科学,1994,21(3):42-46. 被引量:53
  • 2李国徵 刘云生.主动实时数据库特征对数据管理的影响.全国第14届数据库会议论文集[M].成都:四川联合大学出版社,.551-555.
  • 3[1]Liu JWS, Shih WK, Lin KJ, Bettati R, Chung JY. Imprecise computations. Proc. of the IEEE, 1994,82(1):83~94.
  • 4[2]Choi KH, Jung GY, Kim T, Jung SH. Real-Time scheduling algorithm for minimizing maximum weighted error with O(NlogN+cN) complexity. Information Processing Letters, 1998,67(6):311~315.
  • 5[3]Mittal A, Manimaran G, Murthy CSR. Integrated dynamic scheduling of hard and QoS degradable real-time tasks in multiprocessor systems. Journal of Systems Architecture, 2000,46(9):793~807.
  • 6[4]Castorino A, Ciccarella G. Algorithms for real-time scheduling of error-cumulative tasks based on the imprecise computation approach. Journal of Systems Architecture, 2000,46(7):587~600.
  • 7[5]Baruah SK, Hickey ME. Competitive on-line scheduling of imprecise computations. IEEE Trans. on Computers, 1998,47(9):1027 ~1032.
  • 8[6]Ho KIJ, Leung JYT, Wei WD. Scheduling imprecise computation tasks with 0/1-constraint. Discrete Applied Mathematics, 1997, 78(1,3):117~132.
  • 9[7]Manimaran G, Murthy CSR. A new scheduling approach supporting different fault-tolerant techniques for real-time multiprocessor systems. Journal of Microprocessors and Microsystems, 1997,21(3):163~173.
  • 10[8]Dey JK, Kurose J, Towsley D. On-Line scheduling policies for a class of IRIS (increasing reward with increasing service) real-time tasks. IEEE Trans. on Computers, 1996,45(7):802~813.

共引文献28

同被引文献18

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部