Article

Uniformity improving page allocation for flash memory file systems

Authors:

Sam H. NohAuthors Info & Claims

EMSOFT '07: Proceedings of the 7th ACM & IEEE international conference on Embedded software

Pages 154 - 163

https://doi.org/10.1145/1289927.1289954

Published: 30 September 2007 Publication History

Abstract

Flash memory is a storage medium that is becoming more and more popular. Though not yet fully embraced in traditional computing systems, Flash memory is prevalent in embedded systems, materialized as commodity appliances such as the digital camera and the MP3 player that we enjoy in our everyday lives. This paper considers an issue in file systems that use Flash memory as a storage medium and makes the following two contributions. First, we identify the cost of block cleaning as the key performance bottleneck for Flash memory analogous to the seek time in disk storage. We derive and define three performance parameters, namely, utilization, invalidity, and uniformity, from characteristics of Flash memory and present a formula for block cleaning cost based on these parameters. We show that, of these parameters, uniformity most strongly influences the cost of cleaning and that uniformity is a file system controllable parameter. This leads us to our second contribution, designing the modification-aware (MODA) page allocation scheme and analyzing how enhanced uniformity affects the block cleaning cost with various workloads. Real implementation experiments conducted on an embedded system show that the MODA scheme typically improves 20 to 30% in cleaning time compared to the traditional sequential allocation scheme that is used in YAFFS.

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Uniformity improving page allocation for flash memory file systems

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cover image ACM Conferences

EMSOFT '07: Proceedings of the 7th ACM & IEEE international conference on Embedded software

September 2007

304 pages

ISBN:9781595938251

DOI:10.1145/1289927

Program Chairs:
Christoph M. Kirsch
University of Salzburg
,
Reinhard Wilhelm
Saarland University

Copyright © 2007 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 30 September 2007

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ESWEEK07

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ESWEEK07: Third Embedded Systems Week

September 30 - October 3, 2007

Salzburg, Austria

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Overall Acceptance Rate 60 of 203 submissions, 30%

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Cited By

Fareed IKang MLee WKim SAyguadé EHwu WBadia RHofstee H(2020)Leveraging intra-page update diversity for mitigating write amplification in SSDsProceedings of the 34th ACM International Conference on Supercomputing10.1145/3392717.3392767(1-12)Online publication date: 29-Jun-2020
https://dl.acm.org/doi/10.1145/3392717.3392767
Moon SReddy A(2016)Does RAID Improve Lifetime of SSD Arrays?ACM Transactions on Storage10.1145/276491512:3(1-29)Online publication date: 29-Apr-2016
https://dl.acm.org/doi/10.1145/2764915
Qin YFeng DLiu JTong WZhu Z(2014)DT-GCProceedings of the 2014 International Conference on Cloud Computing and Big Data10.1109/CCBD.2014.28(182-188)Online publication date: 12-Nov-2014
https://dl.acm.org/doi/10.1109/CCBD.2014.28
Lim GMin CEom Y(2013)Virtual memory partitioning for enhancing application performance in mobile platformsIEEE Transactions on Consumer Electronics10.1109/TCE.2013.668969059:4(786-794)Online publication date: Dec-2013
https://doi.org/10.1109/TCE.2013.6689690
Tjioe JBlanco AXie TOuyang Y(2012)Making Garbage Collection Wear Conscious for Flash SSDProceedings of the 2012 IEEE Seventh International Conference on Networking, Architecture, and Storage10.1109/NAS.2012.20(114-123)Online publication date: 28-Jun-2012
https://dl.acm.org/doi/10.1109/NAS.2012.20
BAEK SPARK HCHOI J(2011)On Improving the Reliability and Performance of the YAFFS Flash File SystemIEICE Transactions on Information and Systems10.1587/transinf.E94.D.2528E94-D:12(2528-2532)Online publication date: 2011
https://doi.org/10.1587/transinf.E94.D.2528
DOH ILEE HMOON YKIM ECHOI JLEE DNOH S(2010)NVFAT: A FAT-Compatible File System with NVRAM Write Cache for Its MetadataIEICE Transactions on Information and Systems10.1587/transinf.E93.D.1137E93-D:5(1137-1146)Online publication date: 2010
https://doi.org/10.1587/transinf.E93.D.1137
Wu XReddy A(2010)Exploiting Concurrency to Improve Latency and throughput in a Hybrid Storage SystemProceedings of the 2010 IEEE International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems10.1109/MASCOTS.2010.11(14-23)Online publication date: 17-Aug-2010
https://dl.acm.org/doi/10.1109/MASCOTS.2010.11
Kee-Hoon Jang Tae Hee Han (2010)Efficient garbage collection policy and block management method for NAND flash memory2010 2nd International Conference on Mechanical and Electronics Engineering10.1109/ICMEE.2010.5558538(V1-327-V1-331)Online publication date: Aug-2010
https://doi.org/10.1109/ICMEE.2010.5558538
Dirik CJacob B(2009)The performance of PC solid-state disks (SSDs) as a function of bandwidth, concurrency, device architecture, and system organizationACM SIGARCH Computer Architecture News10.1145/1555815.155579037:3(279-289)Online publication date: 20-Jun-2009
https://dl.acm.org/doi/10.1145/1555815.1555790
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