Restricting utilization of users' resources

User administration can predefine user group-specific and user ID-specific limits for the following resources, thus also providing against inappropriate use of the resources:

• utilization of disk storage space on pubsets

• utilization of main memory

• utilization of CPU capacity

These resources are allocated to individual user groups or user IDs by means of the following commands:

/add-user-group group-identification=.., add-group-member=...

or

/modify-user-group group-identification=.., add-group-member=...

/add-user user-identification=...

or

/modify-user-attributes user-identification=...

The actual control and monitoring of such predefined resource allocations are handled by the operating system (e.g. management of task categories, PCS control, management of job streams and job classes,...).

Example

Global user administration may use the following command to allocate to a user ID a pubset-specific storage space quota that the user ID must not exceed:

/ADD-USER USER-ID=..,PUBLIC-SPACE-LIMIT=..,PUBLIC-SPACE-EXCESS=*NO,

PUBSET=...

User groups to be used for pubset-specific resources management
(PUBLIC-SPACE-LIMIT, PUBLIC-SPACE-EXCESS), are best created on imported pubsets (i.e. not on the home pubset).

All global resources (e.g. the CPU limit) are managed via the group structure on the home pubset.

Predefinition		Command	Operands
Utilization of disk storage space on pubsets	Public space utilization	ADD-/MODIFY-USER-GROUP	PUBSET=... PUBLIC-SPACE-LIMIT=..., PUBLIC-SPACE-EXCESS=... TEMP-SPACE-LIMIT=... JV-NUMBER-LIMIT=..., FILE-NUMBER-LIMIT=...
		ADD-USER/ MODIFY-USER-ATTRIBUTES	PUBLIC-SPACE-LIMIT=..., PUBLIC-SPACE-EXCESS=..., PUBSET=... TEMP-SPACE-LIMIT=..., FILE-NUMBER-LIMIT=..., JV-NUMBER-LIMIT=...

Table 2: Restricting utilization of pubset-specific resources

Predefinition		Command	Operands
Utilization of main memory	Utilization of address space	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	ADDRESS-SPACE-LIMIT=...
	Utilization of main memory	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	RESIDENT-PAGES=...
	Task (de) activation	ADD-/MODIFY-USER-GROUP	ADD-ACCOUNT=..., (MAX-ALLOWED-CATEGORY=..., INHIBIT-DEACTIVATION=...)
		ADD-USER/ MODIFY-USER-ATTRIBUTES	ACCOUNT-ATTRIBUTES= (MAX-ALLOWED-CATEGORY=..., PRIVILEGE=*NO / *PARAMETERS(INHIBIT- DEACTIVATION=...))
Utilization of CPU capacity	CPU limit	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	ADD-ACCOUNT=..., (CPU-LIMIT=..., NO-CPU-LIMIT=...) ACCOUNT-ATTRIBUTES= (CPU-LIMIT=..., PRIVILEGE=*NO / *PARAMETERS(NO-CPU- LIMIT=...))
	Permissible run priority	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	ADD-ACCOUNT=..., (MAXIMUM-RUN-PRIORITY=...) ACCOUNT-ATTRIBUTES= (MAXIMUM-RUN-PRIORITY=...)
	Permissible task categories	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	ADD-ACCOUNT=..., (MAX-ALLOWED-CATEGORY=...) ACCOUNT-ATTRIBUTES= (MAX-ALLOWED-CATEGORY=...)
	Scheduling priority	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	ADD-ACCOUNT=..., (START-IMMEDIATE=...) ACCOUNT-ATTRIBUTES= (PRIVILEGE=*NO / *PARAMETERS(START- IMMEDIATE=...))
	Tuning measures	ADD-/MODIFY-USER-GROUP ADD-USER/ MODIFY-USER-ATTRIBUTES	DMS-TUNING-RESOURCES=... DMS-TUNING-RESOURCES=...
Group administration	Prefix for user IDs	ADD-/MODIFY-USER-GROUP	GROUP-MEMBER-PREFIX=...
	Prefix for groups	ADD-/MODIFY-USER-GROUP	USER-GROUP-PREFIX=...

Table 3: Restricting utilization of global resources