Non-volatile memory driver for applying automated tiered storage with fast memory and slow flash storage

Kazuichi Oe, Takeshi Nanri

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    1 被引用数 (Scopus)

    抄録

    Automated tiered storage with fast memory and slow flash storage (ATSMF) is a hybrid storage system located between non-volatile memories (NVMs) and solid state drives (SSDs). ATSMF aims to reduce average response time for inputoutput (IO) accesses by migrating concentrated IO access areas from SSD to NVM. However, the current ATSMF implementation cannot reduce average response time sufficiently because of the bottleneck caused by the Linux brd driver, which is used for the NVM access driver. The response time of the brd driver is more than ten times larger than memory access speed. To reduce the average response time sufficiently, we developed a block-level driver for NVM called a 'two-mode (2M) memory driver.' The 2M memory driver has both the. map IO access mode and direct IO access mode to reduce the response time while maintaining compatibility with the Linux device-mapper framework. The direct IO access mode has a drastically lower response time than the Linux brd driver because the ATSMF driver can execute the IO access function of 2M memory driver directly. Experimental results also indicate that ATSMF using the 2M memory driver reduces the IO access response time to less than that of ATSMF using the Linux brd driver in most cases.

    本文言語英語
    ホスト出版物のタイトルProceedings - 2018 6th International Symposium on Computing and Networking Workshops, CANDARW 2018
    出版社Institute of Electrical and Electronics Engineers Inc.
    ページ112-118
    ページ数7
    ISBN(電子版)9781538691847
    DOI
    出版ステータス出版済み - 12 26 2018
    イベント6th International Symposium on Computing and Networking Workshops, CANDARW 2018 - Takayama, 日本
    継続期間: 11 27 201811 30 2018

    出版物シリーズ

    名前Proceedings - 2018 6th International Symposium on Computing and Networking Workshops, CANDARW 2018

    会議

    会議6th International Symposium on Computing and Networking Workshops, CANDARW 2018
    Country日本
    CityTakayama
    Period11/27/1811/30/18

    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications
    • Hardware and Architecture
    • Statistics, Probability and Uncertainty
    • Computer Science Applications

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