Capacity Agent metric groups and metrics

Metric computation

The supported computations for a given metric depend on its data type. These computations are described in the following table, and they represent the post-processing operations performed by the Agent on the raw data.

Metric computation equations

The following symbols are used for the metric computation equations, as shown in the following table:

• PV - Previous value of the metric
• CV - Current value of the metric
• PT - Collection time of previous data point
• CT - Collection time of current data point 

Metric data types

Metrics are classified into data types based on how the data is collected by each data collector. The data types determine how BMC Helix Capacity Optimization treats the associated metric data, as well as how the Capacity Agent computes the data. 

The following table lists the data types in alphabetical order and provides a brief description and example.

Metric data units

Metrics are collected in a raw data format of base units and require further processing to produce meaningful results. 

The base units available are determined by the authorized computations for a particular data source. BMC Helix Capacity Optimization provides default units for each metric. 

For each data type, the following table shows the base units, default units, and available units, and the relationship between data type's units and computations.

These sections serve as a reference that lists and describes the UNIX, Linux, and Windows system metrics that are collected and made available through BMC Helix Capacity Optimization. The organization of these sections corresponds to the organization of the system metric groups in the Investigate interface.

Metric groups are displayed in the following contexts in the Gateway Server interface: when you create a filter, when you add a condition to an alert, and when you drill down. 

A basic installation of BMC Helix Capacity Optimization makes the following metric groups available: