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Make it much easier to more accurately size structures - z/OSMF CFRM Policy Editor CF Sizing integration

By QUN WEI posted Thu March 21, 2024 10:16 PM

In z/OS 3.1, z/OSMF Sysplex Management plugin provides a new feature to allow the user to calculate CF structure sizes and directly apply changes to their CFRM policies (and rolled back to z/OS 2.5 with APAR PH47561).

The main function of the CFRM Policy Editor CF Sizing is to perform CF Structure Sizing within a policy. This function is useful when you introduce a new workload or application, change an existing workload in some way, or want to modify your current structure sizes. Compare with current CFSizer website, this new function has below advantages:

. Minimize manual input/re-input of sizing data.

. Persistence of user sizing inputs.

. Map specified sizing inputs to specific structures.

. Size multiple structures in a single action.

. Calculate structure size using CF levels that users already have available and one latest emulated CF Level.

. Integrate CF Sizing into CFRM Policy Editor so size value is tightly coupled to administrative policies.

The CFRM Policy Editor uses CF sizing definitions for the persistence of user inputs for structure sizing. A CF sizing definition is a z/OSMF-managed object with a single-policy scope. CF sizing definitions can be associated with multiple structures, but a structure can be associated with only one CF sizing definition. After the object is defined, it can be used to run sizing across multiple structures as needed.

In the main page of Sysplex Management task, Topology View. Right click sysplex name, the action menu of Sysplex is showed. Select CFRM polices link to open CFRM polices view, as shown in Figure 1.

Figure 1 Sysplex Management main page

Select one policy, right click to open action menu, it allows user to modify, view content, rename, copy, activate and delete the selected policy, as shown in Figure 2.

Figure 2 CFRM Administrative polices

Click Open in CFRM Policy Editor to open CFRM Policy Editor. User can use it to modify the CFRM policies in the CFRM couple data set, as showed in Figure 3.

Figure 3 CFRM Policy Editor

From the CFRM Policy Editor CF Sizing tab, users can perform CF structure sizing for the selected CFRM policy, as shown in Figure 4.

Figure 4 CF Sizing

Add CF Sizing definition

You can add CF Sizing Definitions to perform CF structure sizing. To do so, use the Add action in the CF Sizing Definitions table. Doing so opens a window that you can use to add a CF sizing definition, as shown in Figure 5.

Figure 5 Add CF Sizing Definition

After setting the value of CF sizing definition General Input and Sizing Input, click Calculate to determine the output based on the number of conversations that were input, as Figure 6.

In Sizing Results, you can see the result of the calculation that is run in the Sizing Input section for Initial Size and Size. You can use the Results modifier to adjust the sizing results by percentage. The numerical differences that are adjusted from this method are shown as a value next to the current Sizing Results values.

Figure 6 Add CF Sizing Definition 1

In Associated Structures, you can add the CF structures to be associated with this CF sizing definition. Click Add to display a dialog for adding one or more structures to the Associated Structures list, as Figure 7. Select the structures that you want, Click Add to associate the selected structures.

Figure 7 Add Associated Structures to Upgrade Sizing Definition

On completion, the Associated Structures table is displayed on the Add CF Sizing Definition modal, showing the new structures that were added. Two structures LG2_DFHLOG and IGWLOCK00 are added to the Associated Structures list, as Figure 8.

Figure 8 Add CF Sizing Definition 2

click OK to add the sizing definition, then back to the CF sizing definition table, showing the new sizing definition, as Figure 9.

Figure 9 CF Sizing

Click Editor tab, then click CF Structures tab, the CF Sizing Definition attribute value of two structures LG2_DFHLOG and IGWLOCK00 have become the new sizing definition SIZING1, as Figure 10.

Figure 10 CF Structures

Modify and Size CF Sizing definition

You can modify a CF sizing definition to adjust the CF Level and resize all associated structures. To do so, use the Modify and Size action in the CF Sizing Definitions table, as Figure 11. Doing so opens a window that you can use to modify a sizing definition.

Figure 11 CF Sizing

In the Modify Sizing Definition, after setting the value of CF sizing definition attribute, click OK to add the sizing definition, as Figure 12, then back to the CF sizing definition table, showing the modified sizing definition.

Figure 12 Modify Sizing Definition

Modify and Size multiple CF Sizing definitions

You can apply modifications and sizing to a set of CF sizing definitions at one time. This approach can save you time compared to editing sizing definitions one by one. You can select a set of CF sizing definitions that you want to modify. Then, click Modify and Size, as Figure 13.

Figure 13 Modify and Size multiple CF sizing definition

In the Modify and Size Multiple CF Sizing Definitions, select available CF Level or set Results Modifier. These values are applied to the selected CF sizing definitions, which are listed under Modify and Size Structures in Selected CF Sizing Definitions. You can expand each table row to view more details about the CF sizing definition Inputs, Results, and associated CF Structure to Size. Fields that you leave empty are not modified. Click Next to proceed to the Summary of Updates, as Figure 14.

Figure 14 Modify and Size multiple CF sizing definition 1

Review the Structure sizings to be updated table to confirm that you want to proceed with these sizing values. Each row displays a field from the associated structures to be updated. The columns include the CF Sizing Definition, Structure Name, the updated Field, the Original Value for that Field, and the New Value that the field will be changed to. You can search the table for a specific CF sizing definition, structure, or field.

Click Finish to confirm your selection, as Figure 15.

Figure 15 Modify and Size multiple CF sizing definition 2

On completion, the CF Sizing Definitions table is displayed, showing the modified CF sizing definitions, as Figure 16.

Figure 16 CF Sizing

In the CFRM Policy Editor CF Sizing, click the arrow icon in front of the CF sizing definition, You can expand each table row to view more details about the CF sizing definition, as Figure 17.

Figure 17 CF Sizing

Remove Association of Sizing definition

You can remove the associated CF structures from one or multiple CF sizing definitions. To do so, use the Remove Associations action in the CF Sizing Definitions table, as Figure 18. Doing so opens a modal that you can use to remove the selected structure associations.

Figure 18 Remove Associations

You can click OK to choose to remove all of the associated CF structures from an individual CF sizing definition or multiple CF sizing definitions, as Figure 19.

Figure 19 Remove Structure Associations

On completion, the selected CF sizing definitions have a value of zero in the No. of Structures column of the CF Sizing Definitions table, as Figure 20.

Figure 20 CF Sizing

Click Editor tab, then click CF Structures tab, the CF Sizing Definition attribute value of two structures LG2_DFHLOG and IGWLOCK00 have become none, as Figure 21.