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► Set the Maximum Connections property for JMS connection pools to 40.
► Connect to the local database by using the DB2 JDBC Universal Driver type 2 driver. Type
2 drivers produce better performance when the Business Process Manager V8.0 server
and DB2 are on the same physical system.
► Set the Business Process Manager V8.0 server JVM heap size to a fixed size of 1024 MB.
In addition, use the gencon garbage collection policy.
5.2 Mediation Flow Component settings
This section describes settings used for selected internal performance evaluations of
Mediation Flow Components. These settings were derived by using the tuning methodology
and guidelines described in Chapter 4, “Performance tuning and configuration” on page 47.
Consider these settings starting points for using Mediation Flow Components. For settings
that are not listed, use the default settings that are supplied by the product installer as a
starting point. See 4.1, “Performance tuning methodology” on page 48 for a description of
tuning methodology.
5.2.1 Mediation Flow Component common settings
WebSphere ESB settings are good starting points for tuning a WebSphere ESB solution,
regardless of binding choices:
► Tracing is disabled.
►
If security is required, application security instead of Java2 security is used to reduce
processor usage.
5.2.2 Mediation Flow Component settings for web services
The WebSphere ESB settings for web services are as follows:
► PMI monitoring is disabled
► Value of WebContainer thread pool sizes is set to max 50 and min 10
► Value of WebContainer thread pool inactivity timeouts for thread pools is set to 3500
5.2.3 Mediation Flow Component settings for Java Message Service
The WebSphere ESB settings for WebSphere MQ and JMS are as follows:
► Activation specification
Set the maximum concurrent endpoints to 50.
► Queue Connection factory
Set the maximum connection pool size to 51.
► DiscardableDataBufferSize
Set the size to 10 MB and set CachedDataBufferSize to 40 MB.
104 IBM Business Process Manager V8.0 Performance Tuning and Best Practices