Multi-grained Block Management to Enhance the Space Utilization of File Systems on PCM Storages
學年 104
學期 2
出版（發表）日期 2016-06-01
作品名稱 Multi-grained Block Management to Enhance the Space Utilization of File Systems on PCM Storages
作品名稱（其他語言）
著者 Tseng-Yi Chen; Yuan-Hao Chang; Ming-Chang Yang; Yun-Jhu Chen; Hsin-Wen Wei; Wei-Kuan Shih
單位
出版者
著錄名稱、卷期、頁數 IEEE Transactions on Computers 65(6), pp.1831-1845
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 for 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 strategy to improve the space utilization of file systems over 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. The space utilization of file systems is analyzed with consideration of block sizes. A series of experiments was conducted to evaluate the efficacy of the proposed strategy, and the results show that the proposed strategy can significantly improve the space utilization of file systems.
關鍵字 Phase-change memory;space utilization;byte-addressability;file systems
語言 en_US
ISSN 0018-9340 1557-9956
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度 否
國別 USA
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/107496 )