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Improving user experience of android smartphones using foreground app-aware I/O management

Title
Improving user experience of android smartphones using foreground app-aware I/O management
Authors
Hahn, Sangwook S.Lee, SungjinYee, InhyukRyu, DongukKim, Jihong
DGIST Authors
Lee, Sungjin
Issue Date
2017-09-02
Citation
8th ACM Asia Pacific Conference on Systems, APSys 2017
Type
Conference
ISSN
0000-0000
Abstract
Modern mobile systems are designed to run multiple apps simultaneously to provide a better experience for end users. In such a multi-tasking environment, a foreground app that a user is actually interacting with is often delayed by background ones, which results in significant degradation of user-perceived response time and user experience. Based on detailed analysis of kernel's software stack, we find that the majority of the degradation is caused by the inefficient management of foreground I/Os in the page cache and block I/O layers, and existing techniques like a priority inheritance protocol are not an effective solution to address this. In this paper, we propose a foreground app-aware I/O management scheme that accelerates foreground I/Os by preempting background I/Os in the entire kernel stacks. Our experimental results on smartphones show that the proposed technique reduces the user-perceived response time delay by up to 191%, achieving application's responsiveness close to when a single app solely runs. © 2017 ACM.
URI
http://hdl.handle.net/20.500.11750/4760
DOI
10.1145/3124680.3124721
Publisher
Association for Computing Machinery, Inc
Related Researcher
  • Author Lee, Sungjin Data-Intensive Computing Systems Laboratory
  • Research Interests Computer System, System Software, Storage System, Non-volatile Memory, Flash-based SSD, Distributed Storage Systems
Files:
There are no files associated with this item.
Collection:
Department of Information and Communication EngineeringData-Intensive Computing Systems Laboratory2. Conference Papers


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