https://scholars.lib.ntu.edu.tw/handle/123456789/581458
標題: | Pattern-Guided file compression with user-Experience enhancement for log-Structured file system on mobile devices | 作者: | Ji C Chang L.-P Pan R Wu C Gao C Shi L Kuo T.-W Xue C.J. TEI-WEI KUO |
關鍵字: | File organization; Mobile computing; Executable files; File access patterns; File compression; Log structured file systems; Mobile applications; Mobile storage; Read performance; Stress reduction; User experience | 公開日期: | 2021 | 起(迄)頁: | 127-140 | 來源出版物: | Proceedings of the 19th USENIX Conference on File and Storage Technologies, FAST 2021 | 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%. ? 2021 by The USENIX Association. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85102979702&partnerID=40&md5=f3ccd9188ea0c91efde6c0772acc3206 https://scholars.lib.ntu.edu.tw/handle/123456789/581458 |
顯示於: | 資訊工程學系 |
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