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  1. Python Driver
  2. PYTHON-4482

Improve performance of session pool

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    • Type: Icon: Improvement Improvement
    • Resolution: Fixed
    • Priority: Icon: Unknown Unknown
    • 4.8
    • Affects Version/s: None
    • Component/s: None
    • None
    • Python Drivers
    • Not Needed
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      1. What would you like to communicate to the user about this feature?
      2. Would you like the user to see examples of the syntax and/or executable code and its output?
      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      Context

      The benchmark in PYTHON-4481 shows a lot of time spent waiting in get_server_session and return_server_session. I believe this is due to contention overhead and synchronization cost on the Topology lock. We should be able to make the session pool thread safe and lock-free to avoid this bottleneck.

      Definition of done

      Lock-free and thread-safe session pool. Verify this results in a performance improvement.

            Assignee:
            shane.harvey@mongodb.com Shane Harvey
            Reporter:
            shane.harvey@mongodb.com Shane Harvey
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              Created:
              Updated:
              Resolved: