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  1. Core Server
  2. SERVER-61996

Improve performance of DocumentStorage::appendField

    • Type: Icon: Bug Bug
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 5.3.0, 5.2.1
    • Affects Version/s: None
    • Component/s: None
    • None
    • Fully Compatible
    • ALL
    • v5.2
    • Execution Team 2021-12-27
    • 15

      Some tsbs_query workloads such as high-cpu-all spend a lot of time in bucket unpacking. Timeseries bucket compression made this slower but the slowest part of bucket unpacking is DocumentStorage::appendField where around 25% of CPU time is spent.

      We should look into how we can make this faster. At least not re-hash the same field name over and over again.

            Assignee:
            dan.larkin-york@mongodb.com Dan Larkin-York
            Reporter:
            henrik.edin@mongodb.com Henrik Edin
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              Created:
              Updated:
              Resolved: