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International Conference on Advanced Computer Theory and Engineering (ICACTE 2009)
Xie Yi
Xie Yi
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ASME Press
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Different scheduling strategies are extensively examined in this paper to compare their performance under a variety of data stream scenarios. These strategies include the Chain, Dynamic Chain and FIFO algorithms. The performance is judged in terms of Quality of Service (QoS) requirements such as tuple latency, memory requirements and system throughput. Scenarios of synthetic and real data streams are considered. The simulation results indicate that no specific algorithm can satisfy all QoS requirements in all scenarios of data streams. Therefore, an Intelligent policy should be adopted in a DSMS to switch between these algorithms according to the critical performance criterion and stream scenarios.

Key Words
1. Introduction
2. Basic Process Model
3. Operator Scheduling Algorithms
4. Simulation Framework
5. Results and Discussion
6. Conclusions
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