Evaluating impact of live migration on data center energy saving

Soramichi Akiyama, Takahiro Hirofuchi, Shinichi Honiden

Research output: Contribution to journalConference article

5 Citations (Scopus)


Energy efficiency of cloud data centers is of great concern today and has been tackled by many researchers. Dynamic VM placement is a well-known strategy to improve energy efficiency of a data center. Virtual machines (VMs) under light load are consolidated into a small number of physical machines (PMs) to turn idle PMs into low-power states. Although live migration is essential for dynamic VM placement, former studies have not yet revealed how energy overhead of live migration has impact on energy efficiency of dynamic VM placement. To tackle this problem, we conducted integrated simulation of energy overhead of live migration and dynamic VM placement sing Sim Grid. We used three dynamic VM placement policies and two live migration mechanisms (existing pre-copy and an accelerated mechanism invented by us) to thoroughly evaluate the energy overhead. The results showed that in the worst case energy overhead of live migration occupies 5.8% of total energy consumption of a data center.

Original languageEnglish
Article number7037757
Pages (from-to)759-762
Number of pages4
JournalProceedings of the International Conference on Cloud Computing Technology and Science, CloudCom
Issue numberFebruary
Publication statusPublished - 2015 Jan 1
Externally publishedYes
Event2014 6th IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2014 - Singapore, Singapore
Duration: 2014 Dec 152014 Dec 18



  • Data center
  • Energy efficiency
  • Live migration

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Networks and Communications
  • Software
  • Theoretical Computer Science

Cite this