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首页> 外文会议>Symposium on Mass Storage Systems and Technologies >Reducing write amplification of flash storage through Cooperative Data Management with NVM
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Reducing write amplification of flash storage through Cooperative Data Management with NVM

机译：通过使用NVM的协作数据管理减少闪存存储的写放大

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摘要

Write amplification is a critical factor that limits the stable performance of flash-based storage systems. To reduce write amplification, this paper presents a new technique that cooperatively manages data in flash storage and nonvolatile memory (NVM). Our scheme basically considers NVM as the cache of flash storage, but allows the original data in flash storage to be invalidated if there is a cached copy in NVM, which can temporarily serve as the original data. This scheme eliminates the copy-out operation for a substantial number of cached data, thereby enhancing garbage collection efficiency. Experimental results show that the proposed scheme reduces the copy-out overhead of garbage collection by 51.4% and decreases the standard deviation of response time by 35.4% on average.
机译：写放大是限制基于闪存的存储系统的稳定性能的关键因素。为了减少写放大，本文提出了一种新技术，可以协同管理闪存和非易失性存储器（NVM）中的数据。我们的方案基本上将NVM视为闪存的缓存，但是如果NVM中存在可临时用作原始数据的缓存副本，则可以使闪存中的原始数据无效。此方案消除了对大量缓存数据的复制操作，从而提高了垃圾收集效率。实验结果表明，该方案将垃圾回收的复制开销降低了51.4％，平均响应时间的标准差降低了35.4％。

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