I'm trying to work out how "current_utilization" in the -raw output from "statistics show -object resource_headroom_cpu -raw" correlates (ie. is calculated/converted) to main percentage output in "statistics show -object resource_headroom_cpu"
cluster1::*> statistics show -object resource_headroom_cpu
Raw headroom counters are made available to OPM for advanced computations.
Raw counter:Means that the counter being exported has no math associated with it.
In order for raw counters to be processed into so called "cooked counters" subsequent to retrieval from the database, certain meta-data for each counter is required.
In your example, RAW counter represent % of utilization ( how many microseconds/second CPU was busy with specific work - percentage of time one or more threads is executing "work" ) and has quite complex math behind it.