Homogeneous Batch Memory Deduplication Using Clustering of Virtual Machines  

作　　者：N.Jagadeeswari V.Mohan Raj 

机构地区：[1]Department of CSE,Thanthai Periyar Government Institute of Technology,Vellore,632002,India [2]Department of IT,Sona College of Technology,Salem,636005,India

出　　处：《Computer Systems Science & Engineering》2023年第1期929-943,共15页计算机系统科学与工程（英文）

摘　　要：Virtualization is the backbone of cloud computing,which is a developing and widely used paradigm.Byfinding and merging identical memory pages,memory deduplication improves memory efficiency in virtualized systems.Kernel Same Page Merging(KSM)is a Linux service for memory pages sharing in virtualized environments.Memory deduplication is vulnerable to a memory disclosure attack,which uses covert channel establishment to reveal the contents of other colocated virtual machines.To avoid a memory disclosure attack,sharing of identical pages within a single user’s virtual machine is permitted,but sharing of contents between different users is forbidden.In our proposed approach,virtual machines with similar operating systems of active domains in a node are recognised and organised into a homogenous batch,with memory deduplication performed inside that batch,to improve the memory pages sharing efficiency.When compared to memory deduplication applied to the entire host,implementation details demonstrate a significant increase in the number of pages shared when memory deduplication applied batch-wise and CPU(Central processing unit)consumption also increased.

关 键 词：Kernel same page merging memory deduplication virtual machine sharing content-based sharing 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]