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  1. Core Server
  2. SERVER-39867

Temper ticket count recovery during periods of low replication lag

    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 4.1.11
    • Affects Version/s: None
    • Component/s: None
    • None
    • Fully Compatible
    • Storage NYC 2019-05-06

      The flow control mechanism reduces the number of ticket acquisitions permitted when replication lag reaches a certain threshold. Presently, when replication lag is low, the number of flow control ticket acquisitions permitted is increased too aggressively, leading to oscillations in throughput. Oscillations can be mitigated by tempering the increase in the number of ticket acquisitions when lag is low.

        1. maxlag.png
          maxlag.png
          142 kB
        2. oscillations.png
          oscillations.png
          132 kB

            Assignee:
            daniel.gottlieb@mongodb.com Daniel Gottlieb (Inactive)
            Reporter:
            maria.vankeulen@mongodb.com Maria van Keulen
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              Created:
              Updated:
              Resolved: