Adds metrics for cpu busy time to make cpu utilization easier to calculate. This metric is not exported in the prometheus exposition because all the non-idle states can be trivially summed. However, for users of other metrics systems or consumers of the raw msgpack output, it can be more convenient to work with just busy and idle times and not worry about enumerating and summing the various other states.
Adds metrics for cpu busy time to make cpu utilization easier to calculate. This metric is not exported in the prometheus exposition because all the non-idle states can be trivially summed. However, for users of other metrics systems or consumers of the raw msgpack output, it can be more convenient to work with just busy and idle times and not worry about enumerating and summing the various other states.