Increased CPU usage baseline and steadily increasing over time

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    • Type: Bug
    • Resolution: Done
    • Priority: Major - P3
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    • Affects Version/s: 2.2.21
    • Component/s: None
    • Environment:
      Linux server with MongoDB v3.2.11 and Node mongoose lib v2.7.7 pulling node-mongodb-native v2.2.21
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      Our node setup with mongoose is pulling in the mongodb driver v2.2.21 and seeing a large CPU usage increase. This does not happen if we revert to our last deployment version v2.2.16.

      I've attached below a keymetric screengrab of the issue. The first blue line indicates when our service with v2.2.21 is deployed, showing CPU usage over the next 40min with light usage. Then we deployed again with everything else the same but v2.2.16, indicated by the second blue line. Drastic drop in cpu usage.

      We're running mongodb as a replica set and using mongoose to connect.

      I've also tried to use versions 2.2.17 and also saw a CPU increase. I'm not sure what logs if any I should provide. The mongodb logs show nothing abnormal happening

        1. aliased host for ip in connection string.txt
          88 kB
        2. Keymetric CPU usage increase.png
          Keymetric CPU usage increase.png
          66 kB
        3. Keymetric cpu with logs.png
          Keymetric cpu with logs.png
          64 kB
        4. topology event logs.txt
          495 kB

            Assignee:
            Christian Amor Kvalheim
            Reporter:
            Calvin Shi [X]
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              Created:
              Updated:
              Resolved: