一种基于脏页面延迟拷贝的虚拟机动态内存迁移方法

计算机科学 ›› 2013, Vol. 40 ›› Issue (5): 126-130.

一种基于脏页面延迟拷贝的虚拟机动态内存迁移方法

张伟,张晓霞,王汝传

南京邮电大学计算机学院南京210046;南京邮电大学计算机学院南京210046;南京邮电大学计算机学院南京210046

出版日期:2018-11-16 发布日期:2018-11-16
基金资助:
本文受国家自然科学基金(61003236,2)资助

Live Memory Migration for Virtual Machine Based on Dirty Pages Delayed Copy Method

ZHANG Wei,ZHANG Xiao-xia and WANG Ru-chuan

Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： 通过对虚拟机动态内存迁移过程中内存页面状态的分析,针对预拷贝算法中脏页面可能被重传这一特点,提出一种基于脏页面预测的迭代传送方法。该方法基于时间局部性原理,在页面迭代传送前对页面未来的变脏程度进行预测,根据预测结果对页面进行状态分类,并对处于不同状态的页面采取相应的传送策略。实验证明,与Xen采取的动态迁移方法相比,提出的方法减少了近10%的迁移总量。

关键词: 虚拟机,内存动态迁移,脏页面,预测

Abstract: Through the analysis of the state of the memory pages in the live memory migration for virtual machine,a novel method was proposed to avoid the dirty pages to be retransmitted in the Pre-Copy algorithm．In this method,the next dirty extent of pages is predicted based on the principle of temporal locality before the pages’ transmitting in the iteration stage．According to the result of prediction,the pages are classified into different states to take appropriate transmission strategy．Experiments show that the method has effectively reduced the total migration memory nearly 10% compared to the live migration approach taken by Xen.

Key words: Virtual machine,Live memory migration,Dirty pages,Prediction

张伟,张晓霞,王汝传. 一种基于脏页面延迟拷贝的虚拟机动态内存迁移方法[J]. 计算机科学, 2013, 40(5): 126-130. https://doi.org/

ZHANG Wei,ZHANG Xiao-xia and WANG Ru-chuan. Live Memory Migration for Virtual Machine Based on Dirty Pages Delayed Copy Method[J]. Computer Science, 2013, 40(5): 126-130. https://doi.org/

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