| Web集群服务器的分离式调度策略 |
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| 引用本文： | 雷迎春,张松,李国杰.Web集群服务器的分离式调度策略[J].计算机研究与发展,2002,39(9):1093-1098. |
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| 作者姓名： | 雷迎春 张松 李国杰 |
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| 作者单位： | 中国科学院计算技术研究所国家智能计算机研究开发中心,北京,100080 |
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| 基金项目： | 国家“八六三”高技术研究发展计划基金资助 ( 86 3-30 6 -ZD0 1-0 1) |
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| 摘 要： | 主要用排队论方法讨论了Web集群整体性能与请求调度策略之间的关系，所获得的结论是：在Web集群非过载情况下，一部分后端服务器仅处理静态请求而另一部分后端服务器仅处理动态请求的分离式调度策略要好于所有后端服务器既处理静态请求又处理动态请求的混合式调度策略。用SPECweb99测试工具所做的实际测试更进一步证明：当负载参数为120个连接时，采用分离式调度策略的Web集群服务器可完成63个连接，而采用混合式调度策略的Web集群服务器仅能完成36个连接，性能提高了22.5%。
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| 关 键 词： | Web集群服务器 分离式调度策略 Internet 计算机网络 混合式调度策略 伸展因子 |
SEGREGATION SCHEDULING POLICY IN WEB CLUSTER SERVERS |
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| LEI Ying-Chun,ZHANG Song,and LI Guo-Jie.SEGREGATION SCHEDULING POLICY IN WEB CLUSTER SERVERS[J].Journal of Computer Research and Development,2002,39(9):1093-1098. |
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| Authors: | LEI Ying-Chun ZHANG Song and LI Guo-Jie |
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| Abstract: | Discussed in this paper is the relationship between the performance of web cluster servers and the scheduling policies using a queuing theory method. The result is that the segregation scheduling policy, in which static requests are directed to some back-end servers and dynamic requests are directed to the other servers, is better than the mixture scheduling policy in which both kinds of requests are uniformly directed to all back-end servers. The tests through SPECweb99 further confirm that when the load parameter is set to 120 connections, the web cluster servers adopting the segregation scheduling policy can improve the performance by 22.5% with finished 63 conforming connections, while the ones adopting the mixture scheduling policy can only finish 36 conforming connections. |
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| Keywords: | dispatcher segregation scheduling policy mixture scheduling policy stretch factor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
