Table of Contents

Search

  1. Preface
  2. Analyst Service
  3. Catalog Service
  4. Content Management Service
  5. Data Integration Service
  6. Data Integration Service Architecture
  7. Data Integration Service Management
  8. Data Integration Service Grid
  9. Data Integration Service REST API
  10. Data Integration Service Applications
  11. Data Privacy Management Service
  12. Enterprise Data Preparation Service
  13. Interactive Data Preparation Service
  14. Informatica Cluster Service
  15. Mass Ingestion Service
  16. Metadata Access Service
  17. Metadata Manager Service
  18. Model Repository Service
  19. PowerCenter Integration Service
  20. PowerCenter Integration Service Architecture
  21. High Availability for the PowerCenter Integration Service
  22. PowerCenter Repository Service
  23. PowerCenter Repository Management
  24. PowerExchange Listener Service
  25. PowerExchange Logger Service
  26. SAP BW Service
  27. Search Service
  28. System Services
  29. Test Data Manager Service
  30. Test Data Warehouse Service
  31. Web Services Hub
  32. Application Service Upgrade
  33. Appendix A: Application Service Databases
  34. Appendix B: Connecting to Databases from Windows
  35. Appendix C: Connecting to Databases from UNIX or Linux
  36. Appendix D: Updating the DynamicSections Parameter of a DB2 Database

Configuring the Dispatch Mode

Configuring the Dispatch Mode

The Load Balancer uses the dispatch mode to select a node to run a task. You configure the dispatch mode for the domain. Therefore, all PowerCenter Integration Services in a domain use the same dispatch mode.
When you change the dispatch mode for a domain, you must restart each PowerCenter Integration Service in the domain. The previous dispatch mode remains in effect until you restart the PowerCenter Integration Service.
You configure the dispatch mode in the domain properties.
The Load Balancer uses the following dispatch modes:
  • Round-robin. The Load Balancer dispatches tasks to available nodes in a round-robin fashion. It checks the Maximum Processes threshold on each available node and excludes a node if dispatching a task causes the threshold to be exceeded. This mode is the least compute-intensive and is useful when the load on the grid is even and the tasks to dispatch have similar computing requirements.
  • Metric-based. The Load Balancer evaluates nodes in a round-robin fashion. It checks all resource provision thresholds on each available node and excludes a node if dispatching a task causes the thresholds to be exceeded. The Load Balancer continues to evaluate nodes until it finds a node that can accept the task. This mode prevents overloading nodes when tasks have uneven computing requirements.
  • Adaptive. The Load Balancer ranks nodes according to current CPU availability. It checks all resource provision thresholds on each available node and excludes a node if dispatching a task causes the thresholds to be exceeded. This mode prevents overloading nodes and ensures the best performance on a grid that is not heavily loaded.
The following table compares the differences among dispatch modes:
Dispatch Mode
Checks resource provision thresholds?
Uses task statistics?
Uses CPU profile?
Allows bypass in dispatch queue?
Round-Robin
Checks maximum processes.
No
No
No
Metric-Based
Checks all thresholds.
Yes
No
No
Adaptive
Checks all thresholds.
Yes
Yes
Yes