Load Balancing in Informatica?
Load Balancer is the object of the PowerCenter Integration Service. So how load balancing in Informatica is done? PowerCenter uses load balancer to distributes workflows and session tasks and dispatches tasks to achieve optimal performance and scalability.
Let us learn how load balancing in Informatica is done? For example, When you run a workflow, the Load Balancer dispatches the Session, Command, and predefined EventWait tasks within the workflow. Then the Load Balancer matches task requirements with resource availability to identify the best node to run a task. It dispatches the task to a PowerCenter Integration Service process running on the node. It may dispatch tasks to a single node or across nodes.
Informatica Load Balancer dispatches tasks in the order it receives them. When the Load Balancer needs to dispatch more Session and Command tasks than the PowerCenter Integration Service can run, it places the tasks it cannot run in a queue. When nodes become available, the Load Balancer dispatches tasks from the queue in the order determined by the workflow service level.
Load Balancer Functionality
Dispatch process: The Load Balancer performs several steps to dispatch tasks.
Resources: The Load Balancer can use PowerCenter resources to determine if it can dispatch a task to a node.
Resource provision thresholds: The Load Balancer uses resource provision thresholds to determine whether it can start additional tasks on a node.
Dispatch mode: The dispatch mode determines how the Load Balancer selects nodes for dispatch.
Service levels : When multiple tasks are waiting in the dispatch queue, the Load Balancer uses service levels to determine the order in which to dispatch tasks from the queue.