|Table of Contents|

[1] Hou Chunyan, Wang Jinsong, Chen Chen,. Reliability analysis of web server cluster systemsbased on proportional hazards model [J]. Journal of Southeast University (English Edition), 2018, 34 (2): 187-190. [doi:10.3969/j.issn.1003-7985.2018.02.007]
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Reliability analysis of web server cluster systemsbased on proportional hazards model()
基于比例风险模型的Web服务器集群系统可靠性分析
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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:
34
Issue:
2018 2
Page:
187-190
Research Field:
Computer Science and Engineering
Publishing date:
2018-06-20

Info

Title:
Reliability analysis of web server cluster systemsbased on proportional hazards model
基于比例风险模型的Web服务器集群系统可靠性分析
Author(s):
Hou Chunyan1;  Wang Jinsong1;  Chen Chen2
1School of Computer Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
2College of Computer and Control Engineering, Nankai University, Tianjin 300071, China
侯春燕1;  王劲松1;  陈晨2
1天津理工大学计算机科学与工程学院, 天津 300384; 2南开大学计算机与控制工程学院, 天津 300071
Keywords:
web server cluster;  load-sharing;  proportional hazards model;  reliability;  software aging
web服务器集群;  负载共享;  比例风险模型;  可靠性;  软件老化
PACS:
TP399
DOI:
10.3969/j.issn.1003-7985.2018.02.007
Abstract:
An approach for web server cluster(WSC)reliability and degradation process analysis is proposed. The reliability process is modeled as a non-homogeneous Markov process(NHMH)composed of several non-homogeneous Poisson processes(NHPPs). The arrival rate of each NHPP corresponds to the system software failure rate which is expressed using Cox’s proportional hazards model(PHM)in terms of the cumulative and instantaneous load of the software. The cumulative load refers to software cumulative execution time, and the instantaneous load denotes the rate that the users’ requests arrive at a server. The result of reliability analysis is a time-varying reliability and degradation process over the WSC lifetime. Finally, the evaluation experiment shows the effectiveness of the proposed approach.
提出一个用于Web服务器集群系统(WSC)可靠性和降级过程分析的方法.可靠性过程建模为一个非齐次马尔可夫过程(NHMH), 该过程由若干个非齐次泊松过程(NHPPs)组成.每个NHPP到达速率对应于系统软件失效率.用Cox比例风险模型(PHM)建模软件失效率, 模型中同时考虑软件累积和瞬时工作负载.软件累积工作负载表示软件累积执行时间, 而瞬时工作负载表示用户请求到达速率.可靠性分析结果是一个在WSC生命周期内随时间变化的可靠性和降级过程描述.最后, 评估实验证明了方法的有效性.

References:

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Memo

Memo:
Biography: Hou Chunyan(1980—), female, doctor, lecturer, chunyanhou@163.com.
Foundation items: The National Natural Science Foundation of China(No.61402333, 61402242), the National Science Foundation of Tianjin(No.15JCQNJC00400).
Citation: Hou Chunyan, Wang Jinsong, Chen Chen. Reliability analysis of web server cluster systems based on proportional hazards model[J].Journal of Southeast University(English Edition), 2018, 34(2):187-190.DOI:10.3969/j.issn.1003-7985.2018.02.007.
Last Update: 2018-06-20