HP Process Resource Manager (PRM) manual Mem

◦Word processing and miscellaneous tasks

◦Mail application

Table 9 shows how much CPU and memory resources each application is using. Table 9 CPU and memory resource usage

Application	Sales[LINEBREAK]CPU,	Planning CPU,	Development[LINEBREAK]CPU,	Total CPU use	Total memory
	MEM	MEM	MEM		use
Mail	5%, 2%	3%, 2%	2%, 1%	10%	5%
Word processing	5%, 2%	10%, 5%	5%, 3%	20%	10%
and miscellaneous
Order processing	20%, 15%	-	-	20%	15%
Inventory	-	10%, 15%	-	10%	15%
Design tool	-	-	10%, 30%	10%	30%
Debugging tools	-	-	10%, 10%	10%	10%
Compilers	-	-	20%, 15%	20%	15%

A resulting application priority configuration might be:

•Mail group (mail): [LINEBREAK]10 CPU shares, 5 memory shares

•User default group, word processing, and miscellaneous:[LINEBREAK]20 CPU shares, 10 memory shares

•Business applications group (order processing, inventory): [LINEBREAK]30 CPU shares, 30 memory shares

•Development tools group (design tool, debugger, compilers): [LINEBREAK]40 CPU shares, 55 memory shares

In this configuration, business applications are assigned to the business applications group, and development tools are assigned to the development tools group. These two groups are given a relatively large number of CPU and memory shares to ensure sufficient resources for the critical applications during times of heavy system demand. Lower priority word processing and miscellaneous tasks are run in the user default group, which has a small number of CPU and memory shares. Mail, assigned to a separate group, is restricted to 10 CPU shares and 5 memory shares during times of heavy system demand.

The work-load distribution can be refined further. If an application launches processes, the new processes can be moved to different PRM groups. Thus, a database program that launches several instances, for example, an inventory database and an order processing database, can have more CPU and memory assigned to the order processing database. Create another group to give order processing the 20 CPU shares it needs during peak processing times, and assign processes associated with the order processing database to the new PRM group. Assign these processes using an application record that has “order *” in the alternate name field. The application manager moves the processes shortly after they are started by the main database application. The new application priority would be:

•Mail group (mail): 10 CPU shares, 5 memory shares

•User default group, word processing, and miscellaneous: [LINEBREAK]20 CPU shares, 10 memory shares

•Order processing group (order processing): 20 CPU shares, 15 memory shares

•Inventory group (inventory): 10 CPU shares, 15 memory shares

•Development tools group (design tool, debugger, compilers): [LINEBREAK]40 CPU shares, 55 memory shares

Selecting a configuration model 39