摘要
基于软件老化现象机理的分类研究,针对资源消耗尽而导致的系统性能衰减和处理容量的下降原因,考虑应用服务器组件和平台之间的老化依赖关系特征,提出了软件老化累积损伤的应用服务器再生模型,采取等间隔时间的部分再生和基于资源阈值的系统再生两种软件再生的执行策略。获得了应用服务器的维护费和可靠性用函数,同时分析了最优再生时间的边界条件。仿真试验给出了不同内存资源阈值下的,应用服务器的最优再生时间间隔以及变化趋势。
Aiming at system performance and processing capability degradation resulting from the exhausting of resources and the characteristic of aging dependence of the application server components and platform, application server aging accumulative damage model was put forward based on the classified analysis of the software aging mechanism. Both rejuvenation policies with fixed interval and resource threshold were employed. The maintenance cost and reliability functions were obtained and the boundary condition of the optimal rejuvenation time was analyzed. Simulation experiment presents the optimal rejuvenation intervals of the application server and the tendency with different resource thresholds.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2006年第z2期226-229,共4页
Journal of System Simulation
基金
国家自然基金资助项目(60473098)
国家"八六三"基金资助项目(2004AA112040)。
关键词
应用服务器
软件再生
维护代价
老化积累损伤模型
application server
software rejuvenation
maintenance cost
aging accumulative damage model
