Optimizing Space Utilization of File Systems over PCM-based Storage Devices
學年 103
學期 1
發表日期 2014-08-20
作品名稱 Optimizing Space Utilization of File Systems over PCM-based Storage Devices
作品名稱(其他語言)
著者 Chang, Yuan-Hao; Chen, Tseng-Yi; Chen, Yun-Jhu; Wei, Hsin-Wen; Shih, Wei-Kuan; Lai, Zhao-Rong
作品所屬單位 淡江大學電機工程學系
出版者 IEEE
會議名稱 3rd IEEE Nonvolatile Memory Systems and Applications Symposium (NVMSA 2014)
會議地點 Chongqing, China
摘要 Phase-change memory (PCM) is a promising candidate as a storage medium to resolve the performance gap between main memory and storage in battery-powered mobile computing systems. However, it is more expensive than flash memory, and thus introduces a more serious storage capacity issue in low-cost solutions. This issue is further exacerbated by the fact that existing file systems are usually designed to trade space utilization for performance over block-oriented storage devices. In this work, we propose a multi-grained block management scheme to optimize the space utilization of file systems on PCM-based storage systems. By utilizing the byte-addressability and fast read/write feature of PCM, a methodology is proposed to dynamically allocate multiple sizes of blocks to fit the size of each file, so as to resolve the space fragmentation issue with minimized space and management overheads. A series of experiments was conducted to evaluate the efficacy of the proposed scheme, and the results show that the proposed scheme could significantly improve the space utilization of file systems.
關鍵字
語言 en_US
收錄於
會議性質 國際
校內研討會地點
研討會時間 20140820~20140821
通訊作者
國別 CHN
公開徵稿 Y
出版型式 紙本
出處 3rd IEEE Nonvolatile Memory Systems and Applications Symposium (NVMSA 2014), pp.1-6
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