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A lightweight technique for hot data identification considering the continuity of a Nand flash memory system

  • Journal of Internet of Things and Convergence
  • Abbr : JKIOTS
  • 2022, 8(5), pp.77-83
  • Publisher : The Korea Internet of Things Society
  • Research Area : Engineering > Computer Science > Internet Information Processing
  • Received : July 24, 2022
  • Accepted : September 11, 2022
  • Published : October 31, 2022

LEESEUNGWOO 1

1영남이공대학교

Accredited

ABSTRACT

Nand flash memory requires an Erase-Before-Write operation structurally. In order to solve this problem, it can be solved by classifying a page (hot data page) where data update operation occurs frequently and storing it in a separate block. The MHF (Multi Hash Function Framework) technique records the frequency of data update requests in the system memory, and when the recorded value exceeds a certain standard, the data update request is judged as hot data. However, the method of simply counting only the frequency of the data update request has a limit in judging it as accurate hot data. In addition, in the case of a technique that determines the persistence of a data update request, the fact of the update request is recorded sequentially based on a time interval and then judged as hot data. In the case of such a persistence-based method, its implementation and operation are complicated, and there is a problem of inaccurate judgment if frequency is not considered in the update request. This paper proposes a lightweight hot data determination technique that considers both frequency and persistence in data update requests.

Citation status

* References for papers published after 2022 are currently being built.