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An adaptive file-system-oriented FTL mechanism for flash-memory storage systems

An adaptive file-system-oriented FTL mechanism for flash-memory storage systems An Adaptive File-System-Oriented FTL Mechanism for Flash-Memory Storage Systems YUAN-HAO CHANG, National Taipei University of Technology PO-LIANG WU, University of Illinois at Urbana-Champaign TEI-WEI KUO and SHIH-HAO HUNG, National Taiwan University As ‚ash memory becomes popular over various platforms, there is a strong demand regarding the performance degradation problem, due to the special characteristics of ‚ash memory. This research proposes the design of a le-system-oriented ‚ash translation layer, in which a lter mechanism is designed to separate the access requests of le-system metadata and le contents for better performance. A recovery scheme is then proposed for maintaining the integrity of a le system. The proposed ‚ash translation layer is implemented as a Linux device driver and evaluated with respect to ext2 and ext3 le systems. Experiments were also done over NTFS by a series of realistic traces. The experimental results show signi cant performance improvement over ext2, ext3, and NTFS le systems with limited system overheads. Categories and Subject Descriptors: D.4.2 [Operating Systems]: Storage Management ”Secondary storage General Terms: Design,Experimentation, Management, Measurement, Performance Additional Key Words and Phrases: NAND ‚ash memory, MLC ‚ash memory, solid-state drives, le systems, ext2, NTFS, performance enhancement, address translation ACM Reference Format: Chang, http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Embedded Computing Systems (TECS) Association for Computing Machinery

An adaptive file-system-oriented FTL mechanism for flash-memory storage systems

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References (33)

Publisher
Association for Computing Machinery
Copyright
Copyright © 2012 by ACM Inc.
ISSN
1539-9087
DOI
10.1145/2146417.2146426
Publisher site
See Article on Publisher Site

Abstract

An Adaptive File-System-Oriented FTL Mechanism for Flash-Memory Storage Systems YUAN-HAO CHANG, National Taipei University of Technology PO-LIANG WU, University of Illinois at Urbana-Champaign TEI-WEI KUO and SHIH-HAO HUNG, National Taiwan University As ‚ash memory becomes popular over various platforms, there is a strong demand regarding the performance degradation problem, due to the special characteristics of ‚ash memory. This research proposes the design of a le-system-oriented ‚ash translation layer, in which a lter mechanism is designed to separate the access requests of le-system metadata and le contents for better performance. A recovery scheme is then proposed for maintaining the integrity of a le system. The proposed ‚ash translation layer is implemented as a Linux device driver and evaluated with respect to ext2 and ext3 le systems. Experiments were also done over NTFS by a series of realistic traces. The experimental results show signi cant performance improvement over ext2, ext3, and NTFS le systems with limited system overheads. Categories and Subject Descriptors: D.4.2 [Operating Systems]: Storage Management ”Secondary storage General Terms: Design,Experimentation, Management, Measurement, Performance Additional Key Words and Phrases: NAND ‚ash memory, MLC ‚ash memory, solid-state drives, le systems, ext2, NTFS, performance enhancement, address translation ACM Reference Format: Chang,

Journal

ACM Transactions on Embedded Computing Systems (TECS)Association for Computing Machinery

Published: Mar 1, 2012

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