NDLI: nSwitching: Virtual Machine aware relay hardware switching to improve intra-NIC Virtual Machine traffic

Content Provider	IEEE Xplore Digital Library
Author	Bardgett, J. Zou, C.
Copyright Year	2012
Description	Author affiliation: Harris Corporation, 1025 W. NASA Blvd., Melbourne, FL 32919 (Bardgett, J.) \|\| University of Central Florida, 4000 Central Florida Blvd., Orlando, FL 32816 (Zou, C.)
Abstract	Recent development on Ethernet switching to provide Single Root I/O Virtualization (SR-IOV) on network interface cards (NICs) improves Ethernet throughput for Virtual Machines (VMs) and lowers CPU loads. SR-IOV creates multiple receive queues on a NIC, directly accessible by VMs for frames coming from sources external to the Ethernet port. This virtualization of Ethernet ports and the presentation of frames directly to VMs eliminates a major cause for CPU loading by reducing the interrupts for receipt of inbound frames. However, SR-IOV cannot provide switching support for two VMs on the same computer; the only existing switching option is software-based switching in the hypervisor, which limits throughput and results in high CPU utilization. New industry standards 802.1Qbg and 802.1Qbh assist Ethernet traffic between VMs, but they require costly replacement of both Ethernet NICs and the data center external physical switch infrastructure. In this paper, we propose a new design by integrating a new Ethernet switching functionality into the NIC, which is called nSwitch, to enable hardware-based switching for inter-VM traffic on a single computer that has a single or multi-socket, multi-core CPU. Compared with software-based switching in the hypervisor, this enhancement greatly reduces CPU utilization and permits efficient traffic monitoring for on-board inter-VM I/O. Furthermore, it eliminates the back-and-forth usage of external port or channel bandwidth for internal VM communications.
Starting Page	2700
Ending Page	2705
File Size	215638
Page Count	6
File Format	PDF
ISBN	9781457720529
ISSN	15503607
e-ISBN	9781457720536
e-ISBN	9781457720512
DOI	10.1109/ICC.2012.6363879
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-10
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Bandwidth Virtual machine monitors Software Hardware vSwitch Virtualization Virtual Machine switching CPU utilization
Content Type	Text
Resource Type	Article

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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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Nswitching: virtual machine aware relay hardware switching to improve intra-nic virtual machine traffic.

Diagnosing CPU utilization in the Xen virtual machine environment

Measuring and Analyzing CPU Overhead of Virtualization System

High-Performance vNIC Framework for Hypervisor-Based NFV with Userspace vSwitch

Comparisons of Memory Virtualization Solutions for Architectures with Software-Managed TLBs

Speeding up packet I/O in virtual machines

Implementing a Hybrid Virtual Machine Monitor for Flexible and Efficient Security Mechanisms

Towards the InfiniBand SR-IOV vSwitch Architecture

Virtual machines CPU monitoring with kernel tracing

nSwitching: Virtual Machine aware relay hardware switching to improve intra-NIC Virtual Machine traffic

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nSwitching: Virtual Machine aware relay hardware switching to improve intra-NIC Virtual Machine traffic