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  1. Lustre
  2. LU-13801

Enable io_uring interface for Lustre client

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    • Improvement
    • Resolution: Done
    • Minor
    • None
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    • 9223372036854775807

    Description

      Kernels since 5.1 have implemented the io_uring interface (https://kernel.dk/io_uring.pdf) for efficient asynchronous IO submission to storage. According to posted results, io_uring is on-par with SPDK doing all of the IO in userspace. The io_uring interface is intended to replace the older libaio interface.

      With the recent performance improvements for libaio AIO/DIO, it should be possible to use the io_uring interfaces in a similar manner.

      I don't think many applications are using this interface yet, but since it provides a significant improvement over libaio it will likely become used in performance-oriented applications.

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              wc-triage WC Triage
              adilger Andreas Dilger
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