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  1. Core Server
  2. SERVER-66511

Improve performance of blocking sort queries in SBE

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    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 6.2.0-rc0
    • Affects Version/s: None
    • Component/s: None
    • Fully Compatible
    • QE 2022-09-19, QE 2022-10-03, QE 2022-10-17, QE 2022-10-31
    • 35
    • 15

      This is a known issue that pertains to sort implementation in SBE. The new plan cache cannot help here.

      Relevant microbenchmarks:

      • Queries.NonCoveredBlockingSortWithIndexToSupportSort -19.74%
      • Queries.CoveredBlockingSort -23.30%

        1. classic100k.svg
          254 kB
        2. classic1k.svg
          465 kB
        3. classiccovered.svg
          543 kB
        4. classicmanyfieldsort.svg
          506 kB
        5. classicnoncovered.svg
          490 kB
        6. classicsort.svg
          560 kB
        7. sbe100k.svg
          200 kB
        8. sbe1k.svg
          510 kB
        9. sbecoveredblocking.svg
          600 kB
        10. sbemanyfieldsort.svg
          555 kB
        11. sbenoncovered.svg
          517 kB
        12. sbesort.svg
          600 kB

            Assignee:
            alberto.massari@mongodb.com Alberto Massari
            Reporter:
            ethan.zhang@mongodb.com Ethan Zhang (Inactive)
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            Watchers:
            12 Start watching this issue

              Created:
              Updated:
              Resolved: