The Central Performance History (CPH) allows you to save performance values of the monitoring infrastructure long-term, and to output these values in reports to compare the current performance data with its earlier development.
In the operating system monitor, data from the CPH of the local system is displayed if you choose data from the History subtree in the Analysis Views subscreen (more information Selecting Current Values and History of Operating System Data)
For you to be able to display CPH data in the operating system monitor, the CPH must be set up in the local system (more information: Configuring the Central Performance History). Part of this configuration consists of assigning a collection and reorganization schema to the MTE classes that are to be stored in the CPH. This schema contains information about the period and granularity of the (more information: Assigning Collection and Reorganization Schemata to Performance Values). To be able to display all data in the History subtree, hourly values should be collected and stored for at least 45 days for all operating system data MTE classes.
You can also display and change these assignments in the operating system monitor. This is explained in this procedure.
However, in some cases all attributes of a particular monitoring object are also collected in the CPH. In this case, the corresponding line in the list, in the Name of the Attribute column, has the entry <ALL> <name of the monitoring object>. For example, the entry <ALL> CPU, means that all nodes that belong to the monitoring object CPU are collected in the CPH.