標題: Cleaning policies in mobile computers using flash memory
作者: Chiang, ML
Chang, RC
資訊工程學系
Department of Computer Science
關鍵字: flash memory;cleaning policy;mobile computer;consumer electronics;embedded system
公開日期: 1-十一月-1999
摘要: Flash memory is small, lightweight, shock-resistant, nonvolatile, and consumes little power. Flash memory therefore shows promise for use in storage devices for consumer electronics, mobile computers and embedded systems. However, flash memory cannot be overwritten unless erased in advance. Erase operations are slow that usually decrease system performance, and consume power. The number of erase cycles is also limited. For power conservation, better system performance, and longer flash memory lifetime, system support for erasure management is necessary. In this paper, we use the non-update-in-place scheme to implement a flash memory server and propose a new cleaning policy to reduce the number of erase operations needed and to evenly wear out flash memory. The policy uses a fine-grained method to effectively cluster hot data and cold data in order to reduce cleaning overhead. A wear-leveling algorithm is also proposed. Performance evaluations show that erase operations are significantly reduced and flash memory is evenly worn, Though the proposed fine-grained separation scheme is targeted at flash memory-based systems, it can be applied to other storage systems as well. (C) 1999 Elsevier Science Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/S0164-1212(99)00059-X
http://hdl.handle.net/11536/30980
ISSN: 0164-1212
DOI: 10.1016/S0164-1212(99)00059-X
期刊: JOURNAL OF SYSTEMS AND SOFTWARE
Volume: 48
Issue: 3
起始頁: 213
結束頁: 231
顯示於類別:期刊論文


文件中的檔案:

  1. 000083206200006.pdf