华中科技大学学报（自然科学版）Issue(11)：1-5,5.DOI:10.13245/j.hust.141101
虚拟机内存轻量级检查点研究
Lightweight checkpoint of vi rtual machine memory
摘要
Abstract
The size of the traditional virtual machine (VM) checkpoint is very large and the downtime of VM is long .In order to solve the two problems of VM checkpoint ,page eviction ,copy-on-write , and incremental memory mechanism were proposed in this paper .Free page eviction can avoid saving useless page in checkpoint file ,so that the size of VM checkpoint can be reduced .By copying the memory page only w hen there is w riting operation on it ,copy-on-w rite can reduce the time of check-point .By computing the incremental memory page and only including the incremental information in checkpoint ,the size of VM checkpoint can be reduced .The experiment shows that with copy-on-write checkpoint mechanism ,the shutdow n time of VM is reduced to 300 ms .With free page eviction and incremental checkpoint ,the size of checkpoint file is reduced by 20% .关键词
虚拟机/检查点/写时复制/增量检查点/内存排空Key words
virtual machine/checkpoint/copy-on-w rite/incremental checkpoint/free page eviction分类
信息技术与安全科学引用本文复制引用
羌卫中,刘玲,邹德清..虚拟机内存轻量级检查点研究[J].华中科技大学学报（自然科学版）,2014,(11):1-5,5.基金项目
国家自然科学基金资助项目（61370106）；国家高技术研究发展计划资助项目（2012AA012600）． （）
