Co-author(s) :

Kocharyan Aram ; Yaya Hannas ; Tchana Alain ; Hagimont Daniel ; Astsatryan Hrachya

Abstract:

Energy consumption is a primary concern for datacenters? management. Numerous datacenters are relying on virtualization, as it provides flexible resource management means such as virtual machine (VM) checkpoint/restart, migration and consolidation. However, one of the main hindrances to server consolidation is physical memory. In nowadays cloud, memory is generally statically allocated to VMs and wasted if not used. Techniques (such as ballooning) were introduced for dynamically reclaiming memory from VMs, such that only the needed memory is provisioned to each VM. However, the challenge is to precisely monitor the needed memory, i.e., the working set of each VM. In this paper, we thoroughly review the main techniques that were proposed for monitoring the working set of VMs. Additionally, we have implemented the main techniques in the Xen hypervisor and we have defined different metrics in order to evaluate their efficiency. Based on the evaluation results, we propose Badis, a system which combines several of the existing solutions, using the right solution at the right time. We also propose a consolidation extension which leverages Badis in order to pack the VMs based on the working set size and not the booked memory. The implementation of all techniques, our proposed system, and the benchmarks we have used are publicly available in order to support further research in this domain.

Place of publishing:

New York, NY, United States

Publisher:

Association for Computing Machinery

Date of publication:

03.05.2018

Identifier:

oai:noad.sci.am:136145

DOI:

10.1145/3179422

ISSN:

2476-1249

Language:

English

Journal or Publication Title:

Proceedings of the ACM on Measurement and Analysis of Computing Systems

Volume:

2

Number:

1

URL:

Affiliation:

Institut de Recherche en Informatique de Toulouse ; Institute for Informatics and Automation Problems

Country:

Armenia ; France