Stalehelp wantedlifecycle/staletype/bug
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Description
Describe the bug The CPU utilization calculated by process_cpu_seconds_total, pulsar_lb_cpu_usage provided by pulsar and container metrics provided by kubernetes are inconsistent and vary greatly, which is the correct one? Why is there a difference?
Expressions for calculation of indicators
# process_cpu_seconds_totall
irate(process_cpu_seconds_total{pod="pulsar-private-broker-0"}[5m])
# pulsar_lb_cpu_usagel
pulsar_lb_cpu_usage{pod="pulsar-private-broker-0"}
# Container Metrics Metrics provided by kubernetes
sum(irate(container_cpu_usage_seconds_total{pod="pulsar-private-broker-0"}[5m])) by (pod) / sum(kube_pod_container_resource_limits_cpu_cores{pod="pulsar-private-broker-0"}) by (pod)