Details

    • Type: Improvement
    • Status: Done
    • Priority: Medium
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
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      Description

      Alexey S has completed the round of testing with new PXC version and based on observation and experiment
      current default values for following variables probably can be updated to the proposed optimal values.

      existing proposed
      fc_limit 16 100
      send_window 4 10
      user_send_window 2 4

      It is not like if we leave them to current default we will not see performance gain but
      now we are replicating faster and so for example: existing fc_limit of 16 is not enough and needs
      to be upgraded. We of-course don't want to upgrade it to some really large value (like GR has 25000)
      for SELECT latency issue that I am discussing through a blog post in coming day.

      So if there is consensus we can proceed with this change.

      I don't foresee any functional problem with this change but as a safety we will do it on branch
      that QA can run through pquery-process and dev can run through mtr.
      (We should able to fold it on by EOD).

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              • Assignee:
                krunal.bauskar Krunal Bauskar
                Reporter:
                krunal.bauskar Krunal Bauskar
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                  Updated:
                  Resolved: