IEICE TRANSACTIONS on Information
Postcopy Live Migration with Guest-Cooperative Page Faults
Summary :
Postcopy live migration is a promising alternative of virtual machine (VM) migration, which transfers memory pages after switching the execution host of a VM. It allows a shorter and more deterministic migration time than precopy migration. There is, however, a possibility that postcopy migration would degrade VM performance just after switching the execution host. In this paper, we propose a performance improvement technique of postcopy migration, extending the para-virtualized page fault mechanism of a virtual machine monitor. When the guest operating system accesses a not-yet-transferred memory page, our proposed mechanism allows the guest kernel to defer the execution of the current process until the page data is transferred. In parallel with the page transfer, the guest kernel can yield VCPU to other active processes. We implemented the proposed technique in our postcopy migration mechanism for Qemu/KVM. Through experiments, we confirmed that our technique successfully alleviated performance degradation of postcopy migration for web server and database benchmarks.
- Publication
- IEICE TRANSACTIONS on Information Vol.E98-D No.12 pp.2159-2167
- Publication Date
- 2015/12/01
- Publicized
- 2015/09/15
- Online ISSN
- 1745-1361
- DOI
- 10.1587/transinf.2015PAP0011
- Type of Manuscript
- Special Section PAPER (Special Section on Parallel and Distributed Computing and Networking)
- Category
- Operating System
Authors
Takahiro HIROFUCHI
National Institute of Advanced Industrial Science and Technology (AIST)
Isaku YAMAHATA
VA Linux Systems Japan K.K.,Intel Corporation
Satoshi ITOH
National Institute of Advanced Industrial Science and Technology (AIST)
Keyword
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Takahiro HIROFUCHI, Isaku YAMAHATA, Satoshi ITOH, "Postcopy Live Migration with Guest-Cooperative Page Faults" in IEICE TRANSACTIONS on Information,
vol. E98-D, no. 12, pp. 2159-2167, December 2015, doi: 10.1587/transinf.2015PAP0011.
Abstract: Postcopy live migration is a promising alternative of virtual machine (VM) migration, which transfers memory pages after switching the execution host of a VM. It allows a shorter and more deterministic migration time than precopy migration. There is, however, a possibility that postcopy migration would degrade VM performance just after switching the execution host. In this paper, we propose a performance improvement technique of postcopy migration, extending the para-virtualized page fault mechanism of a virtual machine monitor. When the guest operating system accesses a not-yet-transferred memory page, our proposed mechanism allows the guest kernel to defer the execution of the current process until the page data is transferred. In parallel with the page transfer, the guest kernel can yield VCPU to other active processes. We implemented the proposed technique in our postcopy migration mechanism for Qemu/KVM. Through experiments, we confirmed that our technique successfully alleviated performance degradation of postcopy migration for web server and database benchmarks.
URL: https://global.ieice.org/en_transactions/information/10.1587/transinf.2015PAP0011/_p
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@ARTICLE{e98-d_12_2159,
author={Takahiro HIROFUCHI, Isaku YAMAHATA, Satoshi ITOH, },
journal={IEICE TRANSACTIONS on Information},
title={Postcopy Live Migration with Guest-Cooperative Page Faults},
year={2015},
volume={E98-D},
number={12},
pages={2159-2167},
abstract={Postcopy live migration is a promising alternative of virtual machine (VM) migration, which transfers memory pages after switching the execution host of a VM. It allows a shorter and more deterministic migration time than precopy migration. There is, however, a possibility that postcopy migration would degrade VM performance just after switching the execution host. In this paper, we propose a performance improvement technique of postcopy migration, extending the para-virtualized page fault mechanism of a virtual machine monitor. When the guest operating system accesses a not-yet-transferred memory page, our proposed mechanism allows the guest kernel to defer the execution of the current process until the page data is transferred. In parallel with the page transfer, the guest kernel can yield VCPU to other active processes. We implemented the proposed technique in our postcopy migration mechanism for Qemu/KVM. Through experiments, we confirmed that our technique successfully alleviated performance degradation of postcopy migration for web server and database benchmarks.},
keywords={},
doi={10.1587/transinf.2015PAP0011},
ISSN={1745-1361},
month={December},}
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TY - JOUR
TI - Postcopy Live Migration with Guest-Cooperative Page Faults
T2 - IEICE TRANSACTIONS on Information
SP - 2159
EP - 2167
AU - Takahiro HIROFUCHI
AU - Isaku YAMAHATA
AU - Satoshi ITOH
PY - 2015
DO - 10.1587/transinf.2015PAP0011
JO - IEICE TRANSACTIONS on Information
SN - 1745-1361
VL - E98-D
IS - 12
JA - IEICE TRANSACTIONS on Information
Y1 - December 2015
AB - Postcopy live migration is a promising alternative of virtual machine (VM) migration, which transfers memory pages after switching the execution host of a VM. It allows a shorter and more deterministic migration time than precopy migration. There is, however, a possibility that postcopy migration would degrade VM performance just after switching the execution host. In this paper, we propose a performance improvement technique of postcopy migration, extending the para-virtualized page fault mechanism of a virtual machine monitor. When the guest operating system accesses a not-yet-transferred memory page, our proposed mechanism allows the guest kernel to defer the execution of the current process until the page data is transferred. In parallel with the page transfer, the guest kernel can yield VCPU to other active processes. We implemented the proposed technique in our postcopy migration mechanism for Qemu/KVM. Through experiments, we confirmed that our technique successfully alleviated performance degradation of postcopy migration for web server and database benchmarks.
ER -
English
