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NVRAM-Aware Mapping Table Management for Flash Storage Devices

Yongju SONG, Sungkyun LEE, Dong Hyun KANG, Young Ik EOM

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Summary :

Flash storage suffers from severe performance degradation due to its inherent internal synchronization overhead. Especially, flushing an L2P (logical address to physical address) mapping table significantly contributes to the performance degradation. To relieve the problem, we propose an efficient L2P mapping table management scheme on the flash storage, which works along with a small-sized NVRAM. It flushes L2P mapping table from DRAM to NVRAM or flash memory selectively. In our experiments, the proposed scheme shows up to 9.37× better performance than conventional schemes.

Publication
IEICE TRANSACTIONS on Information Vol.E102-D No.8 pp.1576-1580
Publication Date
2019/08/01
Publicized
2019/04/26
Online ISSN
1745-1361
DOI
10.1587/transinf.2019EDL8022
Type of Manuscript
LETTER
Category
Data Engineering, Web Information Systems

Authors

Yongju SONG
  Sungkyunkwan University
Sungkyun LEE
  Sungkyunkwan University
Dong Hyun KANG
  Dongguk University-Gyeongju
Young Ik EOM
  Sungkyunkwan University

Keyword