IEICE TRANSACTIONS on Information
Predictable Packet Latency in Xen-ARM
Summary :
In this paper, we address latency issue in Xen-ARM virtual machines. Despite the advantages of virtualization in mobile systems, the current Xen-ARM is difficult to apply to mobile devices because it has unpredictable I/O latency. This paper analyzes the latency of incoming packet handling in Xen-ARM, and presents how virtualization affects the latency in detail. To make the latency predictable, firstly, we modify Xen-ARM scheduler so that the driver domain can be promptly scheduled by the hypervisor. Secondly, we introduce additional paravirtualization of guest OS that minimizes non-preemptible code path. With our enhancements, 99% of incoming packets are predictably handled within one millisecond at the destined guest OS, which is a feasible time bound for most soft real-time applications.
- Publication
- IEICE TRANSACTIONS on Information Vol.E95-D No.11 pp.2613-2623
- Publication Date
- 2012/11/01
- Publicized
- Online ISSN
- 1745-1361
- DOI
- 10.1587/transinf.E95.D.2613
- Type of Manuscript
- PAPER
- Category
- Software System
Authors
Keyword
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Seehwan YOO, Kuenhwan KWAK, Jaehyun JO, Chuck YOO, "Predictable Packet Latency in Xen-ARM" in IEICE TRANSACTIONS on Information,
vol. E95-D, no. 11, pp. 2613-2623, November 2012, doi: 10.1587/transinf.E95.D.2613.
Abstract: In this paper, we address latency issue in Xen-ARM virtual machines. Despite the advantages of virtualization in mobile systems, the current Xen-ARM is difficult to apply to mobile devices because it has unpredictable I/O latency. This paper analyzes the latency of incoming packet handling in Xen-ARM, and presents how virtualization affects the latency in detail. To make the latency predictable, firstly, we modify Xen-ARM scheduler so that the driver domain can be promptly scheduled by the hypervisor. Secondly, we introduce additional paravirtualization of guest OS that minimizes non-preemptible code path. With our enhancements, 99% of incoming packets are predictably handled within one millisecond at the destined guest OS, which is a feasible time bound for most soft real-time applications.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.E95.D.2613/_p
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@ARTICLE{e95-d_11_2613,
author={Seehwan YOO, Kuenhwan KWAK, Jaehyun JO, Chuck YOO, },
journal={IEICE TRANSACTIONS on Information},
title={Predictable Packet Latency in Xen-ARM},
year={2012},
volume={E95-D},
number={11},
pages={2613-2623},
abstract={In this paper, we address latency issue in Xen-ARM virtual machines. Despite the advantages of virtualization in mobile systems, the current Xen-ARM is difficult to apply to mobile devices because it has unpredictable I/O latency. This paper analyzes the latency of incoming packet handling in Xen-ARM, and presents how virtualization affects the latency in detail. To make the latency predictable, firstly, we modify Xen-ARM scheduler so that the driver domain can be promptly scheduled by the hypervisor. Secondly, we introduce additional paravirtualization of guest OS that minimizes non-preemptible code path. With our enhancements, 99% of incoming packets are predictably handled within one millisecond at the destined guest OS, which is a feasible time bound for most soft real-time applications.},
keywords={},
doi={10.1587/transinf.E95.D.2613},
ISSN={1745-1361},
month={November},}
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TY - JOUR
TI - Predictable Packet Latency in Xen-ARM
T2 - IEICE TRANSACTIONS on Information
SP - 2613
EP - 2623
AU - Seehwan YOO
AU - Kuenhwan KWAK
AU - Jaehyun JO
AU - Chuck YOO
PY - 2012
DO - 10.1587/transinf.E95.D.2613
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E95-D
IS - 11
JA - IEICE TRANSACTIONS on Information
Y1 - November 2012
AB - In this paper, we address latency issue in Xen-ARM virtual machines. Despite the advantages of virtualization in mobile systems, the current Xen-ARM is difficult to apply to mobile devices because it has unpredictable I/O latency. This paper analyzes the latency of incoming packet handling in Xen-ARM, and presents how virtualization affects the latency in detail. To make the latency predictable, firstly, we modify Xen-ARM scheduler so that the driver domain can be promptly scheduled by the hypervisor. Secondly, we introduce additional paravirtualization of guest OS that minimizes non-preemptible code path. With our enhancements, 99% of incoming packets are predictably handled within one millisecond at the destined guest OS, which is a feasible time bound for most soft real-time applications.
ER -
English
