ASA-FTL: An adaptive separation aware flash translation layer for solid state drives

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• 作者：Wei Xie^a ; ^{wei.xie@ttu.edu} ; Yong Chen ; ^a ; ^{yong.chen@ttu.edu} ; Philip C. Roth^b ; ^{rothpc@ornl.gov}
• 刊名：Parallel Computing
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：61
• 期：Complete
• 页码：3-17
• 全文大小：2752 K
• 卷排序：61

文摘

An innovative FTL approach (ASA-FTL) for identifying and separating hot/cold data at the page level based on data clustering for SSDs; A sampling and selective caching technique to control the overhead of clustering-based hot/cold data separation approach; A Hotness Updating Algorithm that samples and clusters data periodically to update the separation criteria and an overhead analysis of the approach; An evaluation of the proposed approach using the FlashSim simulator with several real world workloads, showing the performance benefits of our approach compared to a current state of the art FTL; An evaluation of the effect of the sample size and the adaptivity of the proposed ASA-FTL.