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  1. OpenShift Bugs
  2. OCPBUGS-32930

Non-request serving pods run into noisy neighbor problem for large clusters

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    • Icon: Bug Bug
    • Resolution: Done-Errata
    • Icon: Undefined Undefined
    • 4.16.0
    • 4.16.0
    • HyperShift
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      Description of problem:

        For large cluster sizes, non-request serving pods such as OVN, etcd, etc. require more resources. Because these pods live in the same nodes as other hosted cluster's non-request serving pods, we can run into resource exhaustion unless requests for these pods are properly sized.  

      Version-Release number of selected component (if applicable):

          4.16

      How reproducible:

          Always

      Steps to Reproduce:

          1. Create large hosted cluster (200+ nodes)
          2. Observe resource usage of non-request-serving pods
          

      Actual results:

          Resource usage is large, while resource requests remain the same

      Expected results:

          Resource request grows corresponding to cluster size

      Additional info:

          

            cewong@redhat.com Cesar Wong
            cewong@redhat.com Cesar Wong
            Jie Zhao Jie Zhao
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              Created:
              Updated:
              Resolved: