@inproceedings{d494fb399a134d8a8f417b6751f0bced,
title = "Reducing journaling harm on virtualized I/O systems",
abstract = "This paper analyzes the host cache effectiveness in full virtualization, particularly associated with journaling of guests. We observe that the journal access of guests degrades cache performance largely due to the write-once access pattern and the frequent sync operations. To remedy this problem, we design and implement a novel caching policy, called PDC (Pollution Defensive Caching), that detects the journal accesses and prevents them from entering the host cache. The proposed PDC is implemented in QEMU-KVM 2.1 on Linux 4.14 and provides 3-32% performance improvement for various file and I/O benchmarks.",
keywords = "Caching, File system, Journaling, Virtualization",
author = "Eunji Lee and Hyokyung Bahn and Minseong Jeong and Sunghwan Kim and Jesung Yeon and Seunghoon Yoo and Noh, {Sam H.} and Shin, {Kang G.}",
note = "Publisher Copyright: Copyright {\textcopyright} 2016 ACM.; 9th ACM International Systems and Storage Conference, SYSTOR 2016 ; Conference date: 06-06-2016 Through 08-06-2016",
year = "2016",
month = jun,
day = "6",
doi = "10.1145/2928275.2928289",
language = "English",
series = "SYSTOR 2016 - Proceedings of the 9th ACM International Systems and Storage Conference",
publisher = "Association for Computing Machinery, Inc",
booktitle = "SYSTOR 2016 - Proceedings of the 9th ACM International Systems and Storage Conference",
}