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The Workload Management Advisor

WLM is code that runs on MVS mainframes. It can be queried to ask about the load on the MVS machine. When MVS Workload Management has been configured on your OS/390 system, Dispatcher can accept capacity information from WLM and use it in the load balancing process.

Using the WLM advisor, Dispatcher will periodically open connections through the WLM port on each server in the Dispatcher host table and accept the capacity integers returned. Because these integers represent the amount of capacity that is still available and Dispatcher expects values representing the loads on each machine, the capacity integers are inverted by the advisor and normalized into load values (that is, a large capacity integer but a small load value both represent a healthier server). The resulting loads are placed into the System column of the manager report.

There are several important differences between the WLM advisor and other Dispatcher advisors:

Metric Server Restriction: Like the Metric Server agent, the WLM agent reports on server systems as a whole, rather than on individual protocol-specific server daemons. Metric Server and WLM place their results into the system column of the manager report. As a consequence, running both the WLM advisor and Metric Server at the same time is not supported.




Related information
Enabling advisors to manage load balancing
Concept topic Concept topic    

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Last updatedLast updated: Jun 20, 2011 4:04:37 PM EDT
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