| Plane级的闪存固态盘并行调度算法 |
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| 引用本文： | 周华,郑先容,汤浪平.Plane级的闪存固态盘并行调度算法[J].计算机工程与设计,2011,32(12):4048-4051. |
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| 作者姓名： | 周华 郑先容 汤浪平 |
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| 作者单位： | 1. 国防科学技术大学计算机学院,湖南长沙,410073
2. 广东药学院医药信息工程学院,广东广州,510002 |
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| 摘 要： | 为有效缓解固态盘的存储瓶颈问题,针对闪存固态盘内部芯片的工作原理和物理特性,将并行调度技术引入闪存固态盘的闪存转换层(FTL)的设计中,设计并实现了一种plane级的并行调度算法,基本方法就是将一个读写请求分解成多个段,在多个plane上并行的执行,通过更均衡的分配I/O负载,可以显著提高闪存固态盘的整体读写性能。通过设置不同的芯片参数进行了模拟与测试,实验结果表明,采用并行调度技术可以有效提高闪存固态盘中存储芯片之间的并行度,以及芯片内部各个单元之间的并行度,闪存固态盘的读写延时均有较大改善。
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| 关 键 词： | 闪存固态盘 plane级 并行调度 闪存转换层 负载均衡 |
Plane-level parallel scheduling algorithm for flash memory based SSD |
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| ZHOU Hua,ZHENG Xian-rong,TANG Lang-ping.Plane-level parallel scheduling algorithm for flash memory based SSD[J].Computer Engineering and Design,2011,32(12):4048-4051. |
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| Authors: | ZHOU Hua ZHENG Xian-rong TANG Lang-ping |
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| Affiliation: | ZHOU Hua1,ZHENG Xian-rong2,TANG Lang-ping2(1.College of Computer,National University of Defense Technology,Changsha 410073,China,2.College of Medical Information Engineering,Guangdong Pharmaceutical University,Guangzhou 510002,China) |
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| Abstract: | In order to relieve the problem of storage bottleneck,with considering the physical characteristics of flash memory based SSD(solid state drive),a plane-level parallel scheduling algorithm is presented.The fundamental method is to divide an I/O require into several fragments,and to execute these fragments in parallel on the multiple planes.By setting different parameters of chips for testing and analysis,how parallel scheduling affects both the speed of read and write and the performance of flash solid-stat... |
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| Keywords: | flash solid-state disk plane-level parallel scheduling flash translation layer outbound load balancing |
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