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  1. Lustre
  2. LU-14580

Lustre 2.12.6 performance regression

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Details

    • Bug
    • Resolution: Unresolved
    • Major
    • None
    • Lustre 2.12.6
    • 16 Socket Superdome Flex w/8 EDR IB interfaces
    • 2
    • 9223372036854775807

    Description

      Between Lustre 2.12.5 and 2.12.6 releases, we have a major performance regression on large systems with multiple interfaces.

      On a 16 socket Superdome Flex with 8 EDR interfaces functioning as a client of a filesystem capable of > 100 GB/s, using Lustre 2.12.5, we are measuring up to 50 GB/s. With Lustre 2.12.6, the same test is down to 13 GB/s.

      Reverting commit ID f92c7a161242c478658af09159a127bc21cba611 restores performance.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. LU-14055 Write performance regression caused by an commit from LU-13344

          • Major - Major loss of function.
          • Resolved

          Improvement - An improvement or enhancement to an existing feature or task. LU-12820 obd_dirty_transit_pages is always zero and can be removed

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

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              neilb Neil Brown
              schamp Stephen Champion
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              Dates

                Created:
                Updated: