If a concurrency bottleneck occurs on the item tables, increasing
the number of items tables will increase the throughput of the messaging engine.
Before you begin
Before performing this task you must ensure that the messaging engine
is using a data store, and that its Create tables option
is set to True.
Procedure
-
Relevant performance monitoring tools show that the throughput
of a messaging engine is insufficient.
-
Use your database performance monitoring tools to examine lock
statistics for the item tables for evidence of a bottleneck. Consult your
database documentation on how to interpret the locking statistics.
-
Increase the attributes for the messaging engine data store:
the number of permanent tables or temporary tables, or both. For more information
see Configuring a messaging engine data store to use a data source.
You can only increase
the number of permanent tables or temporary tables, not decrease them.
-
Stop and restart the messaging engine so that configuration changes
take effect. The extra tables are created when the messaging engine starts
again.
-
Observe the effect on throughput and lock statistics by checking
performance monitoring tools. Consider whether any improvement is sufficient
and modifying the data store attributes further would be beneficial