基于分类的自适应失效检测系统①.PDFVIP

2015 年 第 24 卷 第 8 期 计 算 机 系 统 应 用 基于分类的自适应失效检测系统① 1,2 2 2 2 杨立苑 , 宋云奎 , 张文博 , 钟 华 1( 中国科学院大学, 北京 100049) 2( 中国科学院软件研究所 软件工程技术研究开发中心, 北京 100190) 摘 要: 虚拟化环境中的实例失效往往会造成巨大的经济损失. 描述了一种面向虚拟化环境的失效检测系统设 计与实现. 考虑了虚拟化环境的层次依赖性, 采用一种层次失效检测模型对不同层次的实例失效进行了分类, 提 高了实例失效恢复的准确性; 通过自适应性动态周期失效检测机制均衡了虚拟机检测器的 CPU 资源消耗和时效 性. 该系统在 OnceCloud[1]平台中进行了实现与实例验证. 关键词: 虚拟化环境; 失效检测; 层次结构; 失效分类 Self-Adaptive Failure Detection System Based on Classification 1,2 2 2 2 YANG Li-Yuan , SONG Yun-Kui , ZHANG Wen-Bo , ZHONG Hua 1(University of Chinese Academy of Sciences, Beijing 100049, China) 2(Technology Center of Software Engineering, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China) Abstract: The failure of instances in virtual environment is always causing huge losses. This paper designs and implements a virtual-environment-oriented failure detection system. In consideration of hierarchical dependence in virtual environment, a hierarchical model is used to classify the failure of instances in different levels in order to improve the accuracy of instance failure recovery, and the mechanism of self-adaptive dynamic failure detection cycle is applied to the trade-off between the CPU resource cost and the timeliness of the virtual machine detector. This system has been implemented and verified in the OnceCloud platform. Key words: virtual environment; failure detection; hierarchical model; failure classification 1 背景 种不同行为. 在虚拟化环境下, 失效检测器如果不对 虚拟化环境下的宕机会带来巨大的损失, 所以虚 以上两类最终行为进行区分,