| 基于统计学的软件系统预恢复时间阈值计算策略 |
| |
| 引用本文： | 王纪文 徐建 游静 刘凤玉. 基于统计学的软件系统预恢复时间阈值计算策略[J]. 计算机科学, 2006, 33(4): 258-259 |
| |
| 作者姓名： | 王纪文 徐建 游静 刘凤玉 |
| |
| 作者单位： | 南京理工大学计算机系,南京,225300 |
| |
| 摘 要： | 软件系统的预恢复是一种预防和主动的容错技术。本文提出了一种基于统计学的软件系统自恢复时间阈值计算算法。该算法基于满足软件系统可用性概率最大化的思想，在系统性能衰退时间分布未知的情况下，根据一定量的性能衰退的检测数据，计算出优化的软件系统自恢复时间闽值。仿真实验结果表明计算结果合理、稳定性好，能有效地应用于实际系统中。
|
| 关 键 词： | 软件系统预恢复 统计估计 性能衰退时间分布 系统可用性 |
A Statistical Strategy to Estimate the Optimal Software Rejuvenation Schedules |
| |
| WANG Ji-Wen,XU Jian,YOU Jing,LIU Feng-Yu (Dept. of Computer,Nanjin University of Science and Teehnology,Nanjin. A Statistical Strategy to Estimate the Optimal Software Rejuvenation Schedules[J]. Computer Science, 2006, 33(4): 258-259 |
| |
| Authors: | WANG Ji-Wen XU Jian YOU Jing LIU Feng-Yu (Dept. of Computer Nanjin University of Science Teehnology Nanjin |
| |
| Affiliation: | Dept. of Computer,Nanjin University of Science and Teehnology,Nanjin 225300 |
| |
| Abstract: | Software rejuvenation, a preventive maintenance technique for software fault tolerance, has been extensively studied in the recent literature. In this paper, we develop a statistical algorithm to estimate the optimal software rejuvenation schedules, provided that the statistical complete sample data of failure times is given, and the optimal software rejuvenation schedules which maximize the system availabilities are derived analytically. Numerical examples illustrate the resulting estimators for the optimal software rejuvenation schedules have quite nice convergence properties and are useful in applying to a real software system in operation without specifying the underlying failure time distributions. |
| |
| Keywords: | Software rejuvenation Statistical estimation Failure time distribution Availability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
点击此处可从《计算机科学》下载全文 |
