云计算环境中虚拟机内存自适应调节算法研究

发布时间：2018-04-14 20:37

本文选题：Xen虚拟机 + swap空间　；参考：《计算机科学与探索》2017年01期

【摘要】：Xen虚拟机自身的资源在创建之初已经固定,往往会因某些虚拟机内存不足而使用swap,使得虚拟机工作性能降低,而有的虚拟机内存比较空闲,使得整体虚拟机内存使用效率不高。之前已经有研究对虚拟机使用过程中的内存调度算法进行设计,但是经过推敲发现,之前内存调度算法由于没有考虑swap空间使用情况而导致整体内存调度不够高效。在前人算法研究基础上,提出了一个更加完善合理的内存调度算法,结合swap和内存使用情况一起调节虚拟机内存。算法仍然延续了Carl提出的空闲内存税概念加以设计,首先根据虚拟机内存和swap使用情况确定该次调节周期的调节范围,之后根据各个虚拟机的内存和swap空间使用情况计算虚拟机目标内存。对前后两种算法分别设计实验进行测试,验证了新算法的高效性。
[Abstract]:The resources of the Xen virtual machine are fixed at the beginning of its creation, so it often uses swapaps because of the shortage of some virtual machine memory, which makes the performance of the virtual machine lower, while some virtual machine memory is relatively idle, which makes the overall virtual machine memory use efficiency low.Some researches have been done to design the memory scheduling algorithm in the process of using virtual machine, but it is found that the memory scheduling algorithm is not efficient enough because of not considering the use of swap space.On the basis of previous algorithms, a more perfect and reasonable memory scheduling algorithm is proposed, which adjusts virtual machine memory with swap and memory usage.The algorithm still continues the concept of free memory tax proposed by Carl. Firstly, according to the memory of virtual machine and the usage of swap, the adjustment range of the adjustment cycle is determined.Then the virtual machine target memory is calculated according to the memory and swap space usage of each virtual machine.Experiments were carried out to verify the efficiency of the new algorithm.
【作者单位】：哈尔滨工业大学计算机科学与技术学院;
【基金】：国家自然科学基金国家重点基础研究发展计划(973计划) 高等学校博士学科点专项科研基金(博导类)~~
【分类号】：TP302;TP301.6

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