BPAC: An adaptive write buffer management scheme for flash-based Solid State Drives

Guanying Wu, B. Eckart, Xubin He
{"title":"BPAC: An adaptive write buffer management scheme for flash-based Solid State Drives","authors":"Guanying Wu, B. Eckart, Xubin He","doi":"10.1109/MSST.2010.5496998","DOIUrl":null,"url":null,"abstract":"Solid State Drives (SSD's) have shown promise to be a candidate to replace traditional hard disk drives, but due to certain physical characteristics of NAND flash, there are some challenging areas of improvement and further research. We focus on the layout and management of the small amount of RAM that serves as a cache between the SSD and the system that uses it. Of the techniques that have previously been proposed to manage this cache, we identify several sources of inefficient cache space management due to the way pages are clustered in blocks and the limited replacement policy. We develop a hybrid page/block architecture along with an advanced replacement policy, called BPAC, or Block-Page Adaptive Cache, to exploit both temporal and spatial locality. Our technique involves adaptively partitioning the SSD on-disk cache to separately hold pages with high temporal locality in a page list and clusters of pages with low temporal but high spatial locality in a block list. We run trace-driven simulations to verify our design and find that it outperforms other popular flash-aware cache schemes under different workloads.","PeriodicalId":350968,"journal":{"name":"2010 IEEE 26th Symposium on Mass Storage Systems and Technologies (MSST)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"51","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 IEEE 26th Symposium on Mass Storage Systems and Technologies (MSST)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MSST.2010.5496998","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 51

Abstract

Solid State Drives (SSD's) have shown promise to be a candidate to replace traditional hard disk drives, but due to certain physical characteristics of NAND flash, there are some challenging areas of improvement and further research. We focus on the layout and management of the small amount of RAM that serves as a cache between the SSD and the system that uses it. Of the techniques that have previously been proposed to manage this cache, we identify several sources of inefficient cache space management due to the way pages are clustered in blocks and the limited replacement policy. We develop a hybrid page/block architecture along with an advanced replacement policy, called BPAC, or Block-Page Adaptive Cache, to exploit both temporal and spatial locality. Our technique involves adaptively partitioning the SSD on-disk cache to separately hold pages with high temporal locality in a page list and clusters of pages with low temporal but high spatial locality in a block list. We run trace-driven simulations to verify our design and find that it outperforms other popular flash-aware cache schemes under different workloads.
BPAC:一种基于闪存的固态硬盘的自适应写缓冲区管理方案
固态硬盘(SSD)已经显示出取代传统硬盘驱动器的潜力,但由于NAND闪存的某些物理特性,还有一些具有挑战性的改进和进一步研究领域。我们关注的是作为SSD和使用它的系统之间的缓存的少量RAM的布局和管理。在先前提出的用于管理此缓存的技术中,我们确定了由于页面聚集在块中的方式和有限的替换策略而导致缓存空间管理效率低下的几个来源。我们开发了一种混合页面/块架构以及一种高级替换策略,称为BPAC,或块页面自适应缓存,以利用时间和空间局域性。我们的技术包括自适应地对磁盘上的SSD缓存进行分区,在页面列表中分别保存具有高时间局部性的页面,在块列表中分别保存具有低时间局部性但高空间局部性的页面集群。我们运行跟踪驱动模拟来验证我们的设计,并发现它在不同工作负载下优于其他流行的闪存感知缓存方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信