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What Matters is an Application: on the Excessive I/Os in Smartphones

Title
What Matters is an Application: on the Excessive I/Os in Smartphones
Author
원유집
Keywords
I/O analysis; End-to-end write amplification; Android; Tizen; smartphone; SQLite; Smart phones; Databases; Androids; Humanoid robots; Cameras; Browsers; Synchronization
Issue Date
2015-10
Publisher
IEEE
Citation
2015 IEEE 11th International Conference on Wireless and Mobile Computing, Networking and Communications, WiMob 2015 4 December 2015, Article number 7348015, Pages 588-595
Abstract
As the number of mobile phone users are increasing, the importance of understanding its I/O behavior is also increasing. In this paper, after analyzing the basic I/O behavior of fourteen popular smartphone workloads, we chose three applications for deeper analysis. The three applications, Contacts, Web Browser, and Camera, are not only the heaviest I/O generator on Android and Tizen, but also the ones with the highest End-to-End Write Amplification, which is the ratio between the actual volume of data written to the storage and the volume of data user or application intended to create; Contacts Manager, for example, has 1.7 × 105 and 3.9 × 104 on Android and Tizen, respectively. We observed that although background applications, such as spell checker and auto-input-completion are not essential part of using aforementioned applications, but they the critical root of generating heavy I/O overhead on Android devices. We also find that applications keep records of numerous auxiliary information on many different databases and a lot of index tables to enhance the user experience; but some of them are merely a duplicate of same information. The fact that each insert in a table creates ripples of side-effect on index tables and on other related tables, the I/Os are easily amplified and causes heavy overhead on the storage system.
URI
http://ieeexplore.ieee.org/document/7348015/http://hdl.handle.net/20.500.11754/28132
ISBN
978-146737701-0
DOI
10.1109/WiMOB.2015.7348015
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > COMPUTER SCIENCE AND ENGINEERING(컴퓨터공학부) > Articles
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