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   Administering a BEA Tuxedo Application at Run Time

To alleviate the performance degradation resulting from heavy system traffic, you may want to implement a load balancing algorithm on your entire application. With load balancing, a load factor is applied to each service within the system, and you can track the total load on every server. Every service request is sent to the qualified server that is least loaded.

To implement system-wide load balancing, complete the following procedure.

1. Run your application for an extended period of time.

2. Note the average amount of time it takes for each service to be performed.

3. In the RESOURCES section of the configuration file:

   • Set LDBAL to Y.

   • Assign a LOAD value of 50 (LOAD=50) to any service that takes approximately the average amount of time.

   • For any service taking longer than the average amount of time, set LOAD>50; for any service taking less than the average amount of time, set LOAD<50.

     Note: This algorithm, although effective, is expensive and should be used only when necessary, that is, only when a service is offered by servers that use more than one queue. Services offered by only one server, or by multiple servers, all of which belong to the same MSSQ (multiple server, single queue) set, do not need load balancing.