Reducing computation overhead of flash translation layer with hash

  • Authors:
  • Ilhoon Shin

  • Affiliations:
  • Department of Electronics and Information Engineering, Seoul National University of Technology, Seoul, South Korea

  • Venue:
  • ACACOS'10 Proceedings of the 9th WSEAS international conference on Applied computer and applied computational science
  • Year:
  • 2010

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Abstract

NAND flash memory does not support the overwrite operation and thus it deploys the flash translation layer which performs the out-place update. When designing a flash translation layer, memory consumption, computation complexity, and garbage collection overhead should be low. However, the representative sector mapping scheme of flash translation layer, FAST causes a huge computation complexity even though it minimizes the memory consumption and the garbage collection overhead. This paper presents a hashed page table for the FAST scheme to reduce the computation overhead. The simulation result shows that the presented method contributes to reduce the computation overhead considerably.