NDLI: Vagabond: Dynamic Network Endpoint Reconfiguration in Virtualized Environments

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Vagabond: Dynamic Network Endpoint Reconfiguration in Virtualized Environments

Content Provider	ACM Digital Library
Author	Mishra, Debadatta Dey, Kallol Kulkarni, Purushottam
Abstract	One of the biggest challenges of virtualization today is to efficiently share and manage network devices among different virtual machines (VMs). Software-based network virtualization solutions like device emulation and split driver device models have advantages of resource sharing and fine grained hypervisor resource control. However, software based approaches have performance and scalability impediments due to the software interventions for every I/O activity. Recent hardware advancements in network devices allow in-device partitioning and assignment of network functions to different guest operating systems. The nature of the assignment is static which gives rise to inflexibility in efficient network resource management. Additionally, fine grained hypervisor control on the network device is compromised because of the direct hardware assignment to the guest virtual machine. In this work, we propose Vagabond, an alternate network virtualization model that supports flexible and dynamic assignment of network resources to guest VMs. The most significant advantage of the proposed model is to facilitate a framework to manage network resources efficiently when the number of hardware in-device partitions are less than the number of VMs. Additionally the advantages of software based network virtualization are kept intact to overcome the difficulties posed due to direct hardware assignment to the guest. Our experimental evaluation shows that the CPU resource overhead with Vagabond is up to 2x lower than the software approach. Compared to the direct hardware assignment, Vagabond incurs an additional overhead of 17% in the best case. We demonstrate the applicability and usage of Vagabond with two use cases: live migration of VMs connected to hardware in-device partitions and a fair-share network resource allocation scheme.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISBN	9781450332521
DOI	10.1145/2670979.2671000
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-11-03
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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