Skip to main content
USENIX
  • Conferences
  • Students
Sign in
  • Home
  • Attend
    • Registration Information
    • Registration Discounts
    • Venue, Hotel, and Travel
    • Students and Grants
  • Program
    • At a Glance
    • Technical Sessions
    • Training Program
    • Poster Sessions
    • WiPs
  • Activities
    • Birds-of-a-Feather Sessions
    • Poster Sessions
  • Sponsorship
  • Participate
    • Call for Papers
    • Call for Posters and WiPs
    • Instructions for Participants
  • About
    • Conference Organizers
    • Questions
    • Services
    • Help Promote!
    • Past Conferences
  • Home
  • Attend
  • Program
  • Activities
  • Sponsorship
  • Participate
  • About

sponsors

Platinum Sponsor
Gold Sponsor
Gold Sponsor
Gold Sponsor
Gold Sponsor
Silver Sponsor
Silver Sponsor
Silver Sponsor
Silver Sponsor
Silver Sponsor
Bronze Sponsor
Bronze Sponsor
Bronze Sponsor
Bronze Sponsor
Bronze Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Media Sponsor
Industry Partner
Industry Partner

help promote

FAST '17 CFP

Get
Help Promote graphics!

connect with us


  •  Twitter
  •  Facebook
  •  LinkedIn
  •  Google+
  •  YouTube

twitter

Tweets by @usenix

usenix conference policies

  • Event Code of Conduct
  • Conference Network Policy
  • Statement on Environmental Responsibility Policy

You are here

Home ยป Mitigating Sync Amplification for Copy-on-write Virtual Disk
Tweet

connect with us

Mitigating Sync Amplification for Copy-on-write Virtual Disk

Authors: 

Qingshu Chen, Liang Liang, Yubin Xia, and Haibo Chen, Shanghai Jiao Tong University

Abstract: 

Copy-on-write virtual disks (e.g., qcow2 images) provide many useful features like snapshot, de-duplication, and full-disk encryption. However, our study uncovers that they introduce additional metadata for block organization and notably more disk sync operations (e.g., more than 3X for qcow2 and 4X for VMDK images). To mitigate such sync amplification, we propose three optimizations, namely per virtual disk internal journaling, dual-mode journaling, and adaptive-preallocation, which eliminate the extra sync operations while preserving those features in a consistent way. Our evaluation shows that the three optimizations result in up to 110% performance speedup for varmail and 50% for TPCC.

Qingshu Chen, Shanghai Jiao Tong University

Liang Liang, Shanghai Jiao Tong University

Yubin Xia, Shanghai Jiao Tong University

Haibo Chen, Shanghai Jiao Tong University

Open Access Media

USENIX is committed to Open Access to the research presented at our events. Papers and proceedings are freely available to everyone once the event begins. Any video, audio, and/or slides that are posted after the event are also free and open to everyone. Support USENIX and our commitment to Open Access.

BibTeX
@inproceedings {194440,
author = {Qingshu Chen and Liang Liang and Yubin Xia and Haibo Chen},
title = {Mitigating Sync Amplification for Copy-on-write Virtual Disk},
booktitle = {14th USENIX Conference on File and Storage Technologies (FAST 16)},
year = {2016},
isbn = {ISBN 978-1-931971-28-7},
address = {Santa Clara, CA},
pages = {241--247},
url = {https://www.usenix.org/conference/fast16/technical-sessions/presentation/chen-qingshu},
publisher = {USENIX Association},
month = feb,
}
Download
Qingshu Chen PDF
View the slides

Presentation Audio

MP3 Download

Download Audio

  • Log in or    Register to post comments

Platinum Sponsors

Gold Sponsors

Silver Sponsors

Bronze Sponsors

Media Sponsors & Industry Partners

Open Access Publishing Partner

© USENIX

  • Privacy Policy
  • Contact Us