The primary data collection process (which is controlled by the default collection definition, CPD) runs as a detached process. This process is created during system startup if you include the following command in either of the following files, depending on which version of OpenVMS that you are running:
SYS$MANAGER:SYSTARTUP_V5.COM SYS$MANAGER:SYSTARTUP_VMS.COM
The Performance Agent startup file is created during installation and is placed in the SYS$STARTUP directory.
You cannot modify the name, interval, and data classes of the CPD collection definition. The primary Performance Agent is the only Performance Agent that collects and records hot file data. To view the CPD collection definition, enter the following command:
$ ADVISE COLLECT SHOW SCHEDULE CPD
If you are collecting data for a cluster environment, you must run the primary data collection process on all nodes in the cluster to be able to use the full analysis and modeling capabilities of the CA software. This is the only way to have a complete representation of the cluster performance characteristics.
The primary data collection process collects the following performance data for a node at 2-minute intervals and for durations specified by the CPD collection definition within the schedule file:
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