Routing requests to nodes that are not running Intelligent Management
Use this task for configuring multiple tiers.
Plan the topology.
To make the autonomic request flow manager aware of nodes that are not running Intelligent Management, we must use one of the following options to configure the node in the Intelligent Management configuration.
Tasks
- The most common scenario is to install the node agent on each node running other middleware software.
- Set the cell to run in Magic N mode. Magic N is the total number of requests that can run concurrently on the node group. To configure Magic N mode, specify the magicNMode and magicN custom properties. Do not use this approach if your different service classes have very different computational demands.
- Specify work factors or speed factors and the computing power of each node. Speed factors are computed automatically by the work profiler for target tiers. For external nodes, we can manually configure speed factors for transaction class modules, which are a transaction class and web module pair. For more information about work and speed factors, read about configuring work factors in multiple tier configurations.
- Set the autonomic request flow manager in manual mode and specify the various settings. Let the autonomic request flow manager estimate speed factors based only on observations from an on demand router (ODR).
In manual mode, supply seat counts, or concurrency allocations, for each combination of ODR, deployment target, and service class. The dequeuing weights and gateway concurrency limits are derived from this information.
To allocate a certain number of seats to each combination of ODR, deployment target, and service class, use the ProfileRoot/properties/arfm/manual/cell.xml file. In WebSphere Extended Deployment v5.1, the file was...
was_root/properties/arfm/manual/cell/node_group_name.xml
Use this file on the machine where the autonomic request flow manager (ARFM) controller is running.
The manual/ directory contains an example file that describes the format.
Subtopics
- Routing requests to external nodes with generic server clusters
- Multiple tiers of processing
- Configure work factors in multiple tier configurations
Configure work factors in multiple tier configurations Routing requests to external nodes with generic server clusters Add middleware servers to configurations Configure the autonomic request flow manager Intelligent Management: autonomic request flow manager custom properties