教師資料查詢 | 類別: 期刊論文 | 教師: 衛信文 Wei, Hsin-Wen (瀏覽個人網頁)

標題:Mitigating write amplification issue of SMR drives via the design of sequential-write-constrained cache
學年108
學期1
出版(發表)日期2019/10/01
作品名稱Mitigating write amplification issue of SMR drives via the design of sequential-write-constrained cache
作品名稱(其他語言)
著者Yu-Pei Liang, Shuo-Han Chen, Yuan-Hao Chang, Yong-Chin Lin, Hsin-Wen Wei, Wei-Kuan Shih
單位
出版者
著錄名稱、卷期、頁數Journal of Systems Architecture: Embedded Software Design 99
摘要Shingled magnetic recording (SMR) is widely considered as a promising storage technology for fulfilling the capacity requirement of next-generation big data applications. However, owing to the sequential-write constraint imposed by the shingled track layout of SMR drives, random-write requests can only be achieved through read-merge-write operations, which lead to considerable write amplification. An on-disk persistent cache area is used in SMR drives to absorb the random-write requests. However, because of the inherent sequential-write constraint, the on-disk persistent cache area cannot absorb duplicate write traffic through in-place overwriting. Such observation motivates us to propose a sequential-write-constrained cache (SWC2) management to mitigate the write amplification issue of SMR drives with the cached data hotness consideration. The proposed strategy is implemented within the Linux system and the experimental results showed that the overall write latency and cache cleaning latency is reduced by an average of 23.47% and 51.67%, respectively.
關鍵字Sequential-write-constrained cache;SMR drives;Write amplification
語言英文(美國)
ISSN
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,電子版
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