PMI system counters

PMI system counters

Use the system counters that the Performance Monitoring Infrastructure (PMI) and Tivoli Performance Viewer collect to monitor how efficiently the system a specific machine (node) is running.

Counters for this category contain information for a machine (node).

PMI data organization

Counter definitions

Name Key Description Granularity Type Level Overhead ID
CPUUsageSinceLastMeasurement systemModule.cpuUtilization Average system CPU utilization. On SMP machines, the value returned is the utilization averaged over all CPUs. Per node CountStatistic Basic Low 1
CPUUsageSinceServerStarted systemModule.avgCpuUtilization Average percent CPU usage that is busy once the server started. Per node TimeStatistic Extended Medium 2
FreeMemory systemModule.freeMemory Amount of real free memory available. Many operating systems take some of the otherwise unallocated memory and use it for additional I/O buffering. The exact amount of buffer memory which can be freed up is dependent on both the platform and the application(s) running on it. Per node CountStatistic All Low 3

Monitor overall system health

Name	Key	Description	Granularity	Type	Level	Overhead	ID
CPUUsageSinceLastMeasurement	systemModule.cpuUtilization	Average system CPU utilization. On SMP machines, the value returned is the utilization averaged over all CPUs.	Per node	CountStatistic	Basic	Low	1
CPUUsageSinceServerStarted	systemModule.avgCpuUtilization	Average percent CPU usage that is busy once the server started.	Per node	TimeStatistic	Extended	Medium	2
FreeMemory	systemModule.freeMemory	Amount of real free memory available. Many operating systems take some of the otherwise unallocated memory and use it for additional I/O buffering. The exact amount of buffer memory which can be freed up is dependent on both the platform and the application(s) running on it.	Per node	CountStatistic	All	Low	3