Investigate why mongod is stalling with 1-8GB as cache size

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    • Type: Task
    • Resolution: Unresolved
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: None
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    • Storage Engines - Transactions
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      This  patch  stalls when we set wired tiger cache to 1GB.

      After reproducing this with DSI, I see the following logs in mongod which seem to indicate that mongod has stalled:

      {"t":\{"$date":"2026-01-05T22:20:19.989+00:00"},"s":"W", "c":"STORAGE", "id":8373000, "ctx":"ThroughputProbingTicketHolderMonitor","msg":"}}{{*Unable to acquire a ticket within deadline, which indicates the system is stalled*}}{{","attr":\{"ticketPool":"writes","total":128,"target":124,"throughput":0,"queued":1,"stalledMicros":59999973}}
      

        1. metrics.2026-01-05T22-32-32Z-00000
          458 kB
        2. metrics.interim
          101 kB
        3. mongod-hang.log
          10.12 MB
        4. pageservice-hang.log
          249 kB
        5. screenshot-1.png
          screenshot-1.png
          638 kB
        6. screenshot-2.png
          screenshot-2.png
          246 kB
        7. Screenshot 2026-01-06 at 10.35.57.png
          Screenshot 2026-01-06 at 10.35.57.png
          433 kB
        8. screenshot-3.png
          screenshot-3.png
          437 kB

            Assignee:
            Unassigned
            Reporter:
            Jagadish Nallapaneni
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              Created:
              Updated: