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  1. OpenShift Bugs
  2. OCPBUGS-6730

Pod latency spikes are observed when there is a compaction/leadership transfer

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Details

    • Bug
    • Resolution: Done
    • Normal
    • None
    • 4.13
    • None

    Description

      Description of problem:
      When running node-density on a 120 node cluster, we see some spikes in pod
      ready latency times. These spikes correspond to a southbound DB compaction. During this compaction time the ovn-controller is not able to connect to a leader.

      Version-Release number of selected component (if applicable):
      4.11.0-0.nightly-2022-03-20-160505

      How reproducible:
      Always

      Steps to Reproduce:
      1. Run node-density-light on a 120 node vluster

      Actual results:
      Pod ready latency spikes which cause the P99 to go up

      Expected results:
      A steady pod ready latency during the test

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            jcaamano@redhat.com Jaime CaamaƱo Ruiz
            dcbw@redhat.com Dan Williams (Inactive)
            Michael Fiedler Michael Fiedler
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            Dates

              Created:
              Updated:
              Resolved: