Noise: container to test the predictability of the binary execution
This simple program continually compares the time after sleeping for a second and plot a dot if the absolute value of the difference between two executions is greater than a threshold. It uses a similar approach of: https://docs.azul.com/prime/jHiccup Every minute it starts a new line, so you can see how often during a minute its execution did not happened periodically.
kubectl logs -f noise
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in the above example you can see during the first minute of its execution, for 7 times the interval between executions was far away from a second: plus or minus 0.5 milliseconds
Now you can compare settings in your K8s cluster to try to make it more predictable