2008Journal of SoftwareOpen access

A Deterministic QoS Guaranteeing Approach for Data Stream Processing

Shanshan Gu Wu

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Abstract

与以往尽最大努力的查询服务提供方式不同,讨论了数据流处理中确定性QoS的保证问题.以网络演算为理论基础,提出了一种数据流处理中的QoS建模和QoS保证方法.系统运行前验证所有查询在满足各自的QoS前提下的可调度性.在运行时为通过QoS可调度性验证的每个查询分配代表其QoS需求的服务曲线,从而保证各查询期望的QoS.为了提高查询处理效率,还讨论了保证QoS的批调度和查询共享.实验结果表明,该QoS保证方法能够有效地为数据流上的连续查询提供确定性的QoS保证.

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与以往尽最大努力的查询服务提供方式不同,讨论了数据流处理中确定性QoS的保证问题.以网络演算为理论基础,提出了一种数据流处理中的QoS建模和QoS保证方法.系统运行前验证所有查询在满足各自的QoS前提下的可调度性.在运行时为通过QoS可调度性验证的每个查询分配代表其QoS需求的服务曲线,从而保证各查询期望的QoS.为了提高查询处理效率,还讨论了保证QoS的批调度和查询共享.实验结果表明,该QoS保证方法能够有效地为数据流上的连续查询提供确定性的QoS保证.

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Available abstract

与以往尽最大努力的查询服务提供方式不同,讨论了数据流处理中确定性QoS的保证问题.以网络演算为理论基础,提出了一种数据流处理中的QoS建模和QoS保证方法.系统运行前验证所有查询在满足各自的QoS前提下的可调度性.在运行时为通过QoS可调度性验证的每个查询分配代表其QoS需求的服务曲线,从而保证各查询期望的QoS.为了提高查询处理效率,还讨论了保证QoS的批调度和查询共享.实验结果表明,该QoS保证方法能够有效地为数据流上的连续查询提供确定性的QoS保证.

Key concepts: Quality of service, Computer science, Mobile QoS, Scheduling (production processes), Computer network, Distributed computing, Service (business), Service provider

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