摘要： 在动态的SOG环境中，针对工作流应用执行中出现的服务故障问题，提出一个SRPS服务重调度策略。如果故障服务为服务图中关键路径上的节点，SRPS考虑采用基于效率的启发式方法对所有未执行的任务重新分配服务，否则SRPS采取基于稳定性考虑的单任务服务重调度。实验结果表明，SRPS策略在高动态性的SOG环境中优于SLACK方法及AHEFT方法。
关键词:
SOGmso-bidi-font-weight: bold,
mso-ascii-font-family: 'Times New Roman',
mso-hansi-font-family: 'Times New Roman'">环境,
mso-ascii-font-family: 'Times New Roman',
mso-hansi-font-family: 'Times New Roman'">工作流,
服务重调度,
SRPSmso-ascii-font-family: 'Times New Roman',
mso-hansi-font-family: 'Times New Roman'">策略mso-bidi-font-size: 10.5pt,
mso-fareast-font-family: 华文中宋,
mso-bidi-font-family: 'AdobeSongStd-Light-Acro,
Bold',
mso-font-kerning: 0pt">
Abstract: In dynamic Service-Oriented Grid(SOG) environment, this paper proposes a SRPS service rescheduling strategy for issue of service fault during the execution of workflow application. If fault service is a node on the critical path of Graph of Services(GS), SRPS will adopt performance-based heuristic method to reassign services for remain tasks, otherwise SRPS will adopt stability-based service rescheduling method for single task. Experimental result proves that SRPS is superior to SLACK and AHEFT in higher dynamic SOG environment.
Key words:
Service-Oriented Grid(SOG) environment,
workflow,
service rescheduling,
SRPS strategy
中图分类号:
罗永红, 陈特放, 张友生. SOG环境中工作流应用的服务重调度策略[J]. 计算机工程, 2010, 36(17): 19-22.
LUO Yong-Gong, CHEN Te-Fang, ZHANG You-Sheng. Service Rescheduling Strategy of Workflow Application in SOG Environment[J]. Computer Engineering, 2010, 36(17): 19-22.