| UBIFS损耗均衡对系统I／O性能的影响 |
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| 引用本文： | 韩春晓,陈番兰,李曦,龚育昌. UBIFS损耗均衡对系统I／O性能的影响[J]. 计算机工程, 2009, 35(6): 260-262 |
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| 作者姓名： | 韩春晓 陈番兰 李曦 龚育昌 |
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| 作者单位： | 中国科学技术大学计算机科学与技术系,合肥,230027 |
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| 摘 要： | 分析flash文件系统的损耗均衡问题，指出损耗均衡的触发条件对系统I／O性能的影响。在最新UBIFS文件系统上运行测试程序，结果证明在不同损耗均衡触发条件下，系统I／O性能的最大差距超过20％。针对现有损耗均衡算法的不足提出一种改进的自适应算法。
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| 关 键 词： | 损耗均衡 垃圾回收 系统I/O性能 flash文件系统 |
| 修稿时间： | |
Impact of UBIFS Wear-leveling on System I/O Performance |
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| HAN Chun-xiao,CHEN Xiang-lan,LI Xi,GONG Yu-chang. Impact of UBIFS Wear-leveling on System I/O Performance[J]. Computer Engineering, 2009, 35(6): 260-262 |
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| Authors: | HAN Chun-xiao CHEN Xiang-lan LI Xi GONG Yu-chang |
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| Affiliation: | Department of Computer Science and Technology;University of Science and Technology of China;Hefei 230027 |
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| Abstract: | This paper analyzes the problem of file system wear-leveling, and points out that the wear-leveling trigger condition will impact system I/O performance. Benchmark is performed on a latest flash file system——UBIFS, and the results show that system I/O performances vary by 20% under different trigger threshold. Aiming at the shortcoming of existing wear-leveling algorithm, it proposes an improved self-adapting algorithm. |
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| Keywords: | wear-leveling garbage-collection system I/O performance flash FS |
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