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Real-time scheduling for data stream management systems

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4 Author(s)
Schmidt, S. ; Database Technol. Group, Dresden Technol. Univ., Germany ; Legler, T. ; Schaller, D. ; Lehner, W.

Quality-aware management of data streams is gaining more and more importance with the amount of data produced by streams growing continuously. The resources required for data stream processing depend on different factors and are limited by the environment of the data stream management system (DSMS). Thus, with a potentially unbounded amount of stream data and limited processing resources, some of the data stream processing tasks (originating from different users) may not be satisfyingly answered, and therefore, users should be enabled to negotiate a certain quality for the execution of their stream processing tasks. After the negotiation process, it is the responsibility of the Data Stream Management System to meet the quality constraints by using adequate resource reservation and scheduling techniques. Within this paper, we consider different aspects of real-time scheduling for operations within a DSMS. We propose a scheduling concept which enables us to meet certain time-dependent quality of service requirements for user-given processing tasks. Furthermore, we describe the implementation of our scheduling concept within a real-time capable data stream management system, and we give experimental results on that.

Published in:

Real-Time Systems, 2005. (ECRTS 2005). Proceedings. 17th Euromicro Conference on

Date of Conference:

6-8 July 2005