Displaying and Changing CPH Settings in the Operating System Monitor 

Use

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.

Procedure

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       1.      Call the operating system monitor (more information: Operating System Monitor.)

       2.      Choose the system for which you want to display CPH settings; more information about selecting the systems: Selecting Operating System Data of Systems, Instances, and Hosts.

       3.      In the navigation bar, choose  Settings à  Central Performance History à  All Systems or  Selected System.

The assignment of performance values to collection and reorganization schemata is based on the system and MTE class of the performance value. If you display the assignments for  All Systems, all of the assignments for which the system has the wildcard character (*) are displayed. These settings apply for all monitored systems unless there is an assignment for the relevant MTE class for precisely this system.

       4.      The system displays the assignments for all relevant MTE classes that contain operating system data. If there is no assignment for an MTE class, the corresponding entry in the Collection/Reorganization Schema column is empty.

However, in some cases all attributes of a particular monitoring object are also collected in the CPH. In this case, the relevant line in the list has the entry <ALL> <name of the monitoring object> in the Name of the Attribute column. For example, the entry <ALL> CPU, means that all nodes that belong to the monitoring object CPU are collected in the CPH.

       5.      To ensure that data for an MTE class is collected in the CPH assign a schema to this MTE class.

If the CPH is not configured in the local system, you can perform a simple configuration by choosing the desired system and the  Selected Systems entry. Choose the  Assign Defaults for CPH button. In this case, the system takes the following actions:

■       It creates the collection and reorganization schema SAPOSCOL; in this schema, hourly average values are retained for 45 days, and daily average values are retained for a year.

■       It creates the daily schema SAPOSCOL_DAY; during the aggregation to daily values, only the hours of heaviest workload (09:00 – 12:00 and 13:00 – 14:00) are taken into account.

■       It assigns the schema SAPOSCOL to MTE classes to which no schema is yet assigned.

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