The HMC collects utilization data for a managed system to create a historical log of system activities that affect partition performance and capacity. The following types of utilization data are collected: sampling events, state change events, configuration change events and Utility CoD processor usage events.
The Utility CoD processor usage event is collected when a Utility CoD processor minute is used. A processor minute is a measure of processor usage. Utility CoD processors are activated for one minute at a time, and a processor minute is recorded for each minute that a Utility CoD processor is activated.
If more than one processor minute is used during the minute period started when the first processor minute is used, all of the used processor minutes are grouped into one event. This is so that the HMC gets a Utility CoD processor usage event once per minute, at most, for a managed system. When the HMC collects a Utility CoD processor usage event, the HMC will immediately collect a sample event for that managed system containing shared processor utilization data for the system, shared processor pool, and partitions.
The Utility CoD processor usage event will contain the HMC date and time, the number of processor minutes used during that minute, and the total number of unreported processor minutes. This event will be logged in the hourly utilization data file. The HMC only saves utilization data events in this file for approximately 2 months.
- Managed system
- The name of the managed system for which the Utility CoD processor usage event was collected.
- Console time
- The local time on the HMC when the Utility CoD processor usage occurred.
- Processor minutes used
- The total number of Utility CoD processor minutes that were used during the last minute.
- Total unreported processor minutes
- The total number of used Utility CoD processor minutes that have not been reported by entering a Utility CoD reporting code on the managed system. Because you can report more processor minutes than you have actually used, this value can be a negative number.