Upgrading the performance monitoring tool

Upgrading performance monitoring does not upgrade the existing perfmon configuration. For example, new sensors that are introduced in newer releases are not enabled automatically when you upgrade the performance monitoring tool to the later release. Enable the new sensors manually afterward.

To list the new sensors/releases and the steps to enable these sensors, see mmperfmon config add command in mmperfmon command.

The update path does not touch existing perfmon config and new sensors needs to be enabled manually after you upgrade the performance monitoring tool. When you enable the sensor that has an impact on the pmcollector memory consumption as well.

Note: There are two new sensors, GPFSPool and GPFSFileset for the pmsensor service. If an older version of the IBM Storage Scale performance monitoring system is upgraded, these sensors are not automatically enabled. This is because automatically enabling the sensors might cause the collectors to consume more main memory than what was set aside for monitoring. Changing the memory footprint of the collector database might cause issues for the users if the collectors are tightly configured.