2.5.2 Load distribution
When application servers configure load distribution by using load balancing or a similar technique, load distribution for batch jobs is also possible in JP1/AJS3.
Load distribution can be supported by grouping execution agents and setting the execution agent group name as the execution agent name for jobs. Points to consider when distributing the load in this way are discussed below.
For examples of how to distribute processing loads, and the order in which the execution agent hosts are determined, see 2.3.1 Processing with a distributed load in the JP1/Automatic Job Management System 3 System Design (Work Tasks) Guide.
- Organization of this subsection
(1) Grouping execution agents
Decide which execution agents to group together and the group name.
A maximum of 1,024 execution agents can belong to a group, and a maximum of 1,024 groups can be registered in one manager host.
The manager host references the registered execution agent group information, and determines which execution agent to forward the job to based on the priority of the agents within the execution agent group, and the maximum number of concurrently executable jobs.
(2) Execution agent priority
When you use an execution agent group to support load distribution, you can specify the job distribution priority for each execution agent in the group.
For an execution agent, you can specify a priority in the range from 1 to 16. The lowest priority is 1, and the default is 16 (highest priority).