数据流操作符实时调度策略研究

The Research Of Real-Time Scheduling For Data Stream Operators

处理无限的连续数据流的应用日益流行,数据流的质量意识越来越多得到人们的重视,数据流上的连续查询系统必须是自适应的,在系统可用资源无法满足需求的时候,需要对操作符进行有效的调度,将讨论DSMS操作符实时调度的各个方面,并提出一种适合时间序列QoS要求的查询处理任务调度策略,实验结果证明所采用的调度策略是有效的。

The application that handles an infinite consecution data stream increasingly popular, the data stream of quality the consciousness gets people＇ s value more and more, Systems for processing continuous queries over data streams must be adaptive, Effective Scheduling is needed when the demands placed on the system can not be met in full given available resources. We will discuss all facts of Real-time Scheduling for DSMS operator, and Introduce a sort of Query processing tasks scheduling that is suitable for time-sequence QoS requirements, All of the Scheduling approach are implemented and experimental results demonstrate their effectiveness.