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    • Technical task
    • Status: Open
    • Minor
    • Resolution: Unresolved
    • None
    • None
    • 9223372036854775807

    Description

      Writeback on close is to piggyback the dirty data for DoM files in the close RPC if the data could fit into the inline buffer. This way it should be able to improve write on small files significantly.

      I have had this idea before and I have seen this problem in my recent test. The writeback to small files are really slow and no matter how large the number I set it to max_rpcs_in_flight of mdc, it could simply max out. Small RPCs are expensive. An alternative solution would be to have compound RPC to merge those small RPCs but it would introduce more issues. The easier solution is to have writeback on close.

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              tappro Mikhail Pershin
              Jinshan Jinshan Xiong
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