Confusing measure for CPU usage

[fwalker]

The unit for measuring the CPU usage - "mCPU" - hard to understand. Our K8s Ops as well as myself could not guess the meaning until @cheld let us know it's "milli CPU".

Some options:

1. Enhance the tool-tip
2. Change the label to "‰ CPU"

[bryk]

@bgrant0607 How should we display CPU usage to users?

The more I think about this the more I'm in favor of changing X mCPU to 0.00X cores. This is exactly what the spec says: https://github.com/kubernetes/kubernetes/blob/master/pkg/api/v1/types.go#L2175. This means we're not introducing anything new. Also, the value Y cores is easier to understand than Z mCPU.

Your opinions?

[cheld]

One more idea. What about:

0.00X CPU(s).

This is slightly incorrect. So, we explain it somehow in the tooltip. e.g.

Display:
2.5 CPUs

Tooltip: (.... uses 2.5 CPU cores)

[bgrant0607]

I'm fine with showing CPU as a decimal. I'd make CPU singular.

We should expect double-digit numbers of cores.