| TSSF:基于QoS分解的可信服务调度框架 |
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| 引用本文： | 隋玉磊,周兴社,符宁,詹涛.TSSF:基于QoS分解的可信服务调度框架[J].计算机科学,2010,37(6):70-74. |
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| 作者姓名： | 隋玉磊 周兴社 符宁 詹涛 |
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| 作者单位： | 西北工业大学计算机学院,西安,710072 |
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| 基金项目： | 863国家基金项目(2006AA01Z162)面向能力可信服务的自适应软件技术研究资助 |
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| 摘 要： | 网络计算环境的松散化、独立性和异构性的特点不断给服务计算发展带来新的挑战,与此同时用户对软件系统实时性、安全性、可靠性、可用性等非功能属性要求又在不断提高,如何保障服务计算系统的可信性是平台设计者和服务应用开发者所面临的重要问题.设计了基于QoS分解的可信服务调度框架(Trustworthy Senrice Scheduling Framework,TSSF),通过对组合服务的可信QOS规划,并利用自适应的服务调度机制为服务提供可信QOS保障.提出了基于模糊集的可信QOS分解模型,将用户对组合服务的QoS需求分解为每个原子服务单独的可信QOS需求;根据分解后的额定QoS需求,以创建动态服务实体组(Dynamic Service Entity Group,DSEG)的方式为原子服务提供可信QoS保障,并以DSEG为基础详细叙述了变粒度、层次化基于反馈设计思想的自适应可信服务调度技术.最后扩展了JBoss中间件,实现了支持该服务调度框架的平台,并在此平台上进行了实验,结果表明TSSF能够为组合服务的QoS需求提供可信保障.
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| 关 键 词： | QoS分解 可信计算 组合服务 可信服务调度 |
| 收稿时间： | 2009/7/20 0:00:00 |
| 修稿时间： | 2009/9/29 0:00:00 |
Trustworthy Service Scheduling Framework Based on QoS Decomposition |
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| SUI Yu-lei,ZHOU Xing-she,FU Ning,ZHAN Tao.Trustworthy Service Scheduling Framework Based on QoS Decomposition[J].Computer Science,2010,37(6):70-74. |
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| Authors: | SUI Yu-lei ZHOU Xing-she FU Ning ZHAN Tao |
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| Affiliation: | (School of Computer, northwestern Polytechnical University, Xi' an 710072 ,China) |
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| Abstract: | Interoperability-centric and loosely-coupled distributed computing environment brings forward a new challenge on trustworthiness of service computing. At the same time, user puts more and more pressure on system's non-functional rectuirements such as real-time, availability, cost and so on. Therefore service' s QoS should be guaranteed trustworthily. In this paper a Trustworthy Service Scheduling Framework(TSSF) was presented to guarantee composite service's QoS requirement Fuzzy sets based trustworthy QoS decomposition model was proposed to decompose the QoS requirement of the composite service into separate ones for the atoms; and then TSSF delivers expected QoS for each atomic service with adaptive trustworthy service scheduling mechanisms based on Dynamic Service Entity Group (DSEG) ;finally experimental results indicate good performance of the proposed framework. |
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| Keywords: | QoS decomposition Trust computing Composite service Trustworthy service scheduling |
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