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  1. Lustre
  2. LU-18463

mdtest perfomance degradation after LU-16973

Details

    • Bug
    • Resolution: Fixed
    • Major
    • Lustre 2.17.0
    • None
    • 3
    • 9223372036854775807

    Description

      With a "LU-16973 ptlrpc: flush delayed file desc if idle" we observed mdtest performance degradation. For directory creation it is about 40% for directory remove about 28%.

      The main idea to resolve this is removing flush to a separate thread.

      Attachments

        Issue Links

          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-16973 Busy device after successful umount

          • Major - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. LU-18152 Use __fput_sync when available

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            [LU-18463] mdtest perfomance degradation after LU-16973
            pjones Peter Jones made changes -
            Link Original: This issue is related to JFC-21 [ JFC-21 ]
            pjones Peter Jones made changes -
            Fix Version/s New: Lustre 2.17.0 [ 16192 ]
            Resolution New: Fixed [ 1 ]
            Status Original: Open [ 1 ] New: Resolved [ 5 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-18152 [ LU-18152 ]
            adilger Andreas Dilger made changes -
            Link New: This issue is related to LU-16973 [ LU-16973 ]
            pjones Peter Jones made changes -
            Link New: This issue is related to JFC-21 [ JFC-21 ]
            aboyko Alexander Boyko created issue -

            People

              aboyko Alexander Boyko
              aboyko Alexander Boyko
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              Dates

                Created:
                Updated:
                Resolved: