NDLI: How to be consistent with persistent memory? An evaluation approach

Content Provider	IEEE Xplore Digital Library
Author	Chundong Wang Qingsong Wei Jun Yang Cheng Chen Mingdi Xue
Copyright Year	2015
Description	Author affiliation: Data Storage Inst., A*STAR, Singapore, Singapore (Chundong Wang; Qingsong Wei; Jun Yang; Cheng Chen; Mingdi Xue)
Abstract	The advent of the byte-addressable, non-volatile memory (NVM) has initiated the design of new data management strategies to utilize it as the persistent memory (PM). One way to manage the PM is via an in-memory file system. The consistency of the in-memory file system may nevertheless be compromised from directly exposing the PM to the CPU, because data are likely to be flushed from the CPU cache to the PM in an order that is different from the order in which they have been programed to be. As a result, in spite of classic consistency mechanisms, such as journaling and Copy-on-Write, file systems for the PM have to seek support of cacheline flush and memory fence instructions, e.g., clflush and sfence, to achieve ordered writes. On the other hand, manipulating the PM as a consistent block device with conventional file systems is also doable. The pros and cons of two approaches, however, have not been thoroughly investigated yet. We hence do so with extensive evaluations and detailed analyses. Our aim of this paper is to inspire how the PM shall be managed, especially from the performance perspective.
Starting Page	186
Ending Page	194
File Size	297563
Page Count	9
File Format	PDF
e-ISBN	9781467378918
DOI	10.1109/NAS.2015.7255223
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-06
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Performance evaluation Band-pass filters Nonvolatile memory File systems Random access memory Bandwidth Metadata
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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