Pattern-Guided file compression with user-Experience enhancement for log-Structured file system on mobile devices

Cheng Ji, Li Pin Chang, Riwei Pan, Chao Wu, Congming Gao, Liang Shi, Tei Wei Kuo, Chun Jason Xue

研究成果: Conference contribution同行評審

摘要

Mobile applications exhibit unique file access patterns, often involving random accesses of write-mostly files and read-only files. The high write stress of mobile applications significantly impacts on the lifespan of flash-based mobile storage. To reduce write stress and save space without sacrificing user-perceived latency, this study introduces FPC, file access pattern guided compression. FPC is optimized for the random-writes and fragmented-reads of mobile applications. It features dual-mode compression: Foreground compression handles write-mostly files for write stress reduction, while background compression packs random-reading file blocks for boosted read performance. FPC exploits the out-of-place updating design in F2FS, a log-structured file system for mobile devices, for the best effect of the proposed dual-mode compression. Experimental results showed that FPC reduced the volume of total write traffic and executable file size by 26.1% and 23.7% on average, respectively, and improved the application launching time by up to 14.8%.

原文English
主出版物標題Proceedings of the 19th USENIX Conference on File and Storage Technologies, FAST 2021
發行者USENIX Association
頁面127-140
頁數14
ISBN(電子)9781939133205
出版狀態Published - 2021
事件19th USENIX Conference on File and Storage Technologies, FAST 2021 - Virtual, Online
持續時間: 23 二月 202125 二月 2021

出版系列

名字Proceedings of the 19th USENIX Conference on File and Storage Technologies, FAST 2021

Conference

Conference19th USENIX Conference on File and Storage Technologies, FAST 2021
城市Virtual, Online
期間23/02/2125/02/21

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