Site24x7 Kubernetes Monitor uses the kubelet API and kube-state-metrics API to collect the metrics related to memory and CPU utilization.

For memory utilization, the calculation works as follows:

Working set size (WSS) memory usage

---------------------------------------------       x 100 = Memory utilization (%)

              Memory limit of pod

Example:

WSS memory usage = 150MiB

Memory limit set for that pod = 256MiB

Memory utilization by percentage = 150 / 256 x 100 = 58.5%

For CPU utilization, the calculation works as follows:

   CPU usage

--------------------        x 100 = CPU utilization (%)

CPU limit of pod

Example:

CPU usage = 200 millicores

CPU limit of that pod = 400 millicores