A Feedback Control Approach for Preventing System Resource Exhaustion Caused by Software Aging,ERICDATA高等教育知識庫
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篇名
A Feedback Control Approach for Preventing System Resource Exhaustion Caused by Software Aging
並列篇名
A Feedback Control Approach for Preventing System Resource Exhaustion Caused by Software Aging
作者 Yun-Fei JiaZhi Quan ZhouRenbiao Wu
英文摘要
The dynamic behavior of software systems attracts widened attention through the phenomenon of software aging. Software aging is caused by runtime environment deterioration, such as the gradual loss of memory or CPU cycles. The dynamic behavior of aged software systems can be described by a set of evolving resource variables, including CPU usage, I/O bandwidth, available memory and the like. From this point of view, an aging software system can be analogous to a dynamic system. Control theory provides sound and rigorous mathematical principles to analyze dynamic systems and build controllers for them. This paper introduces control theory to analyze and build a control model and apply control techniques to an aged web server. First, we treated the software system as a black box, and conducted controlled experiments to build the relationship between input and output. Then, these input-output couples are used to build a control model via a system identification method. Finally, a PI (proportional-integral) controller is designed to adjust the aged state of the software system, and software rejuvenation techniques are customized to target the web server. Performance testing shows that our approach can accurately track the reference value set by the website administrator.
起訖頁 1513-1522
關鍵詞 Software agingMIMO controlSystem identificationSoftware rejuvenationFeedback control
刊名 網際網路技術學刊  
期數 201909 (20:5期)
出版單位 台灣學術網路管理委員會
DOI 10.3966/160792642019092005017   複製DOI
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