vCanal: Paravirtual Socket Library towards Fast Networking in Virtualized Environment

Dongwoo LEE; Changwoo MIN; Young IK EOM

doi:10.1587/transinf.2015EDP7224

vCanal: Paravirtual Socket Library towards Fast Networking in Virtualized Environment

Dongwoo LEE, Changwoo MIN, Young IK EOM

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Virtualization is no longer an emerging research area since the virtual processor and memory operate as efficiently as the physical ones. However, I/O performance is still restricted by the virtualization overhead caused by the costly and complex I/O virtualization mechanism, in particular by massive exits occurring on the guest-host switch and redundant processing of the I/O stacks at both guest and host. A para-virtual device driver may reduce the number of exits to the hypervisor, whereas the network stacks in the guest OS are still duplicated. Previous work proposed a socket-outsourcing technique that bypasses the redundant guest network stack by delivering the network request directly to the host. However, even by bypassing the redundant network paths in the guest OS, the obtained performance was still below 60% of the native device, since notifications of completion still depended on the hypervisor. In this paper, we propose vCanal, a novel network virtualization framework, to improve the performance of network access in the virtual machine toward that of the native machine. Implementation of vCanal reached 96% of the native TCP throughput, increasing the UDP latency by only 4% compared to the native latency.

Publication: IEICE TRANSACTIONS on Information Vol.E99-D No.2 pp.360-369

Publication Date: 2016/02/01

Publicized: 2015/11/11

Online ISSN: 1745-1361

DOI: 10.1587/transinf.2015EDP7224

Type of Manuscript: PAPER

Category: Software System

Authors

Dongwoo LEE
  Sungkyunkwan University
Changwoo MIN
  Sungkyunkwan University
Young IK EOM
  Sungkyunkwan University

Keyword

device virtualization, multicore processor, para-virtual library, concurrent queue, polling-based notification

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Dongwoo LEE, Changwoo MIN, Young IK EOM, "vCanal: Paravirtual Socket Library towards Fast Networking in Virtualized Environment" in IEICE TRANSACTIONS on Information, vol. E99-D, no. 2, pp. 360-369, February 2016, doi: 10.1587/transinf.2015EDP7224.
Abstract: Virtualization is no longer an emerging research area since the virtual processor and memory operate as efficiently as the physical ones. However, I/O performance is still restricted by the virtualization overhead caused by the costly and complex I/O virtualization mechanism, in particular by massive exits occurring on the guest-host switch and redundant processing of the I/O stacks at both guest and host. A para-virtual device driver may reduce the number of exits to the hypervisor, whereas the network stacks in the guest OS are still duplicated. Previous work proposed a socket-outsourcing technique that bypasses the redundant guest network stack by delivering the network request directly to the host. However, even by bypassing the redundant network paths in the guest OS, the obtained performance was still below 60% of the native device, since notifications of completion still depended on the hypervisor. In this paper, we propose vCanal, a novel network virtualization framework, to improve the performance of network access in the virtual machine toward that of the native machine. Implementation of vCanal reached 96% of the native TCP throughput, increasing the UDP latency by only 4% compared to the native latency.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2015EDP7224/_p

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@ARTICLE{e99-d_2_360,
author={Dongwoo LEE, Changwoo MIN, Young IK EOM, },
journal={IEICE TRANSACTIONS on Information},
title={vCanal: Paravirtual Socket Library towards Fast Networking in Virtualized Environment},
year={2016},
volume={E99-D},
number={2},
pages={360-369},
abstract={Virtualization is no longer an emerging research area since the virtual processor and memory operate as efficiently as the physical ones. However, I/O performance is still restricted by the virtualization overhead caused by the costly and complex I/O virtualization mechanism, in particular by massive exits occurring on the guest-host switch and redundant processing of the I/O stacks at both guest and host. A para-virtual device driver may reduce the number of exits to the hypervisor, whereas the network stacks in the guest OS are still duplicated. Previous work proposed a socket-outsourcing technique that bypasses the redundant guest network stack by delivering the network request directly to the host. However, even by bypassing the redundant network paths in the guest OS, the obtained performance was still below 60% of the native device, since notifications of completion still depended on the hypervisor. In this paper, we propose vCanal, a novel network virtualization framework, to improve the performance of network access in the virtual machine toward that of the native machine. Implementation of vCanal reached 96% of the native TCP throughput, increasing the UDP latency by only 4% compared to the native latency.},
keywords={},
doi={10.1587/transinf.2015EDP7224},
ISSN={1745-1361},
month={February},}

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TY - JOUR
TI - vCanal: Paravirtual Socket Library towards Fast Networking in Virtualized Environment
T2 - IEICE TRANSACTIONS on Information
SP - 360
EP - 369
AU - Dongwoo LEE
AU - Changwoo MIN
AU - Young IK EOM
PY - 2016
DO - 10.1587/transinf.2015EDP7224
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E99-D
IS - 2
JA - IEICE TRANSACTIONS on Information
Y1 - February 2016
AB - Virtualization is no longer an emerging research area since the virtual processor and memory operate as efficiently as the physical ones. However, I/O performance is still restricted by the virtualization overhead caused by the costly and complex I/O virtualization mechanism, in particular by massive exits occurring on the guest-host switch and redundant processing of the I/O stacks at both guest and host. A para-virtual device driver may reduce the number of exits to the hypervisor, whereas the network stacks in the guest OS are still duplicated. Previous work proposed a socket-outsourcing technique that bypasses the redundant guest network stack by delivering the network request directly to the host. However, even by bypassing the redundant network paths in the guest OS, the obtained performance was still below 60% of the native device, since notifications of completion still depended on the hypervisor. In this paper, we propose vCanal, a novel network virtualization framework, to improve the performance of network access in the virtual machine toward that of the native machine. Implementation of vCanal reached 96% of the native TCP throughput, increasing the UDP latency by only 4% compared to the native latency.
ER -