Earticle

초록

영어

The memory deduplication mechanism has been used in virtualized environment. The Linux kernel, however, was implemented as anonymous pages with the same content across inter-virtual machines. To resolve this problem, previous work was considered in the page cache inside the guest. So, we propose a KVM-based deduplication mechanism which is used on the host page cache. It does not require a modification of the guest kernel. Our implementation detects more sharing opportunities than the KSM (by factor of 2x), and its CPU overhead is less than 4%. Also, it reduces the page swap in/out by 40% compared to default VMs in the worst case. Thus, the page cache deduplication is required in virtual environments.

목차

Abstract
 1. Introduction
 2. Backgrounds and Related Work
  2. 1. Page Cache Life Cycle
  2.2. Kernel Shared Memory (KSM)
 3. The Host Page Cache based Memory Deduplication
  3. 1. Kernel Architecture
  3. 3. The Page Cache Merging Process
  3. 3. The Page Cache Scanning Process
 4. Evaluations
  4.1. Setup
  4.2. Page Sharing Opportunities
  4.3. Deduplication Effectiveness
 5. Conclusions
 Acknowledgements
 References

키워드

저자

• Seho Lee [ College of Information and Communication Engineering, Sungkyunkwan University ]
• Inhyeok Kim [ College of Information and Communication Engineering, Sungkyunkwan University ]
• Dongwoo Lee [ College of Information and Communication Engineering, Sungkyunkwan University ]
• Young Ik Eom [ College of Information and Communication Engineering, Sungkyunkwan University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605