Perf calculation docs

Are there any docs on how the values for the various stats API's are
calculated? (i.e. _cluster/stats, _nodes/stats)

Most of the values are very self-explanatory, but I'm trying to determine
how the nodes.process.cpu.percent value from _cluster/stats is calculated.
If I have 32 total available processors (per nodes.os.available_processors)
does that mean that the percent value of nodes.process.cpu.percent will
range from 0% to 3200%?


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