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Noh, Sam H.
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Performance characteristics of flash memory: Model and implications

Author(s)
Baek, SeungjaeChoi, JongmooLee, DongheeNoh, Sam H.
Issued Date
2007-05-14
URI
https://scholarworks.unist.ac.kr/handle/201301/37436
Fulltext
http://link.springer.com/chapter/10.1007%2F978-3-540-72685-2_16
Citation
3rd International Conference on Embedded Software and Systems (ICESS 2007), v.4523, pp.162 - 173
Abstract
In this paper, we propose a model to identify the cost of block cleaning of Flash memory. The model defines three performance parameters, namely, utilization, invalidity, and uniformity and presents a formula for estimating the block cleaning cost based on these parameters. Then, we design a new modification-aware (MODA) page allocation scheme which can improve the block cleaning cost by enhancing uniformity of Flash memory. Real implementation experiments conducted on an embedded system show that the MODA scheme can reduce block cleaning time by up to 43 seconds (with an average of 10.2 seconds) compared to the traditional sequential allocation scheme that is used in YAFFS.
Publisher
ICESS 2007
ISBN
3540726845
ISSN
0302-9743

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