Monitoring Overall CPU Utilization in a Micropartitioned Server
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The lparstat command can be run from any logical partition that has enabled "Allow shared processor pool utilization authority" **. The following lparstat output shows 10 measurements taken at 5 second intervals. The size of the shared pool is 2 CPU's (psize). The available processors for each sample interval is shown under the "app" column.
For example, first line under the app column shows 0.65 available processors. The CPU utilization in this interval is 67.5% ( (2.0 - 0.65) / 2.0 )
**The "Allow shared processor pool utilization authority" is enabled from the HMC. "Right click" the partition (not the profiles) and choose "Properties". Go to the "Processors and Memory" tab. Check the "Allow shared processor pool"