Chapter 3: Characterize Workloads › Define User-Group Families

Define User-Group Families

After you created the user-group workload definitions in the parameters file, you can collect them together into a user-group family. Grouping the workload definitions into a family is essential because it is a family name that you specify when the workload definitions are used in reporting, graphing, and archiving. The family name is a convenient and concise way of specifying a collection of user-group workload definitions.

At installation, Performance Agent provides a user-group family, MODEL_USERGROUPS, which cannot be deleted from the parameter file. The workload definition names of this family are listed in the following bullets:

• OPERATOR-Users in the OPERATOR workload
• SYSTEM_USER-Users in the SYSTEM workload
• DECNET-Users in the DECNET workload
• Other-User names that are not defined in one of the other three workloads of this family

The following Parameter Editor examples define new or existing user-group families:

1. To define the MY_USERS family, which includes the WRITERS and SECRETARIES user-group workload definitions and the preceding list of default Performance Agent user-group workload definitions, enter:

   PSDC-EDIT> ADD/FAMILY MY_USERS/WORKLOAD=(WRITERS,-
   _PSDC-EDIT> SECRETARIES,SYSTEM_USER,OPERATOR,DECNET)
   

2. To add new workload definitions to the user-group family, MODEL_USERGROUPS, enter:

   PSDC-EDIT> MODIFY/FAMILY MODEL_USERGROUPS/ADDWORKLOAD=-
   _PSDC-EDIT> (WRITERS,SECRETARIES)
   

The order in which you specify the workload definitions is important when defining a user-group family. Performance Agent allocates process resource use for the user groups specified on a first-match basis. For example, if you specify user TONES in both user groups WRITERS and SECRETARIES (based on example 2), all resource use by TONES falls into the WRITERS user-group workload definition because it is listed first. The resource use is not split between the two workloads. If you create workload definitions that overlap, specify the workload definition with the more specific matching criteria before the workload definition with the more general matching criteria in the user-group family.

Besides the workload definitions specified, all families are treated as if they contain a workload definition of Other. All resource use not matching specified workload definitions is placed in the Other workload.