摘要
SSD中地址映射方式有很多种,常用的有三种:页映射、块映射和混合映射。页映射性能好,但是映射表占用空间大;块映射的映射表占用空间小,但是性能差。本文研究了一种通过算法给定的阀值来判定使用页映射还是混合映射,这样动态的转化使系统映射速度快,空间利用率高,同时也降低了系统资源的浪费和映射表的更新频繁等问题。
There are many kinds of SSD address mapping way,There are three kinds of commonly used：Page mapping. Block mapping and mixed mapping. Page mapping performance is good, but the mapping table takes up the space is large; The block mapping table takes up little space, but the performance is poor. In this paper, we study a kind of the algorithm given threshold to determine whether to use page mapping or mixed mapping, It makes the system dynamic mapping speed, high space utilization rate, but also reduce the waste of system resources and mapping table updates frequently.
出处
《电子设计工程》
2014年第13期152-154,共3页
Electronic Design Engineering
关键词
SSD
页映射
混合映射
地址映射算法
SSD
page mapping
mixed mapping
address mapping algorithm
