@inproceedings{419f98c8b39a40ef93c35bc5041e0d68,
title = "Optimizing space utilization of file systems on PCM-based storage devices",
abstract = "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.",
author = "Chang, {Yuan Hao} and Chen, {Tseng Yi} and Chen, {Yun Jhu} and Wei, {Hsin Wen} and Shih, {Wei Kuan} and Lai, {Zhao Rong}",
note = "Publisher Copyright: {\textcopyright} 2014 IEEE.; null ; Conference date: 20-08-2014 Through 21-08-2014",
year = "2014",
month = oct,
day = "16",
doi = "10.1109/NVMSA.2014.6927203",
language = "???core.languages.en_GB???",
series = "2014 IEEE Non-Volatile Memory Systems and Applications Symposium, NVMSA 2014",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2014 IEEE Non-Volatile Memory Systems and Applications Symposium, NVMSA 2014",
}