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4.3.7 Messaging engine properties
Two messaging engine custom properties might affect the messaging engine performance:
► sib.msgstore.discardableDataBufferSize
– The property stays in the data buffer for best effort nonpersistent messages.
– The default value is 320 KB.
– After the buffer is full, messages are discarded to allow newer messages to be written
to the buffer.
► sib.msgstore.cachedDataBufferSize
– The property stays in memory cache for messages other than best-effort
nonpersistent.
– The default is 320 KB.
To access these properties in the console, use the following steps:
1. Click Service Integration Buses and select the bus name.
2. Click Messaging Engines and select the messaging engine name.
3. Click Additional properties Custom properties.
4.3.8 Running production servers in production mode
Business Process Manager servers can be run in development mode to reduce startup time
for the server by using JVM settings to disable bytecode verification and reduce just-in-time
(JIT) compilation time. Do not use this setting on production servers because it is not
designed to produce optimal runtime performance. Make sure to clear the Run in
development mode check box for the server. This setting is found in the configuration
window of the server in the administrative console. Click Servers Application Servers.
Click the server whose setting you want to change and click Configuration.
You might also create server profiles with production or development templates. Use
production profile templates for production servers.
4.4 Process Portal tuning and usage
This section contains tuning advice and usage guidelines for the Process Portal.
4.4.1 Using a high-performing browser
The choice of browser technology is crucial to Process Portal performance. In some cases,
more recent versions of the browser will perform much better than older versions..
4.4.2 Enable browser caching
Browsers generally cache static data after it is initially retrieved from the server, which can
significantly improve response time for scenarios after the cache is primed. This improvement
is especially true for networks with relatively high latency. Ensure that the browser cache is
active and is effective. Note that cache settings are browser-specific; see 4.11, “Enable
browser caching” on page 78 for further details.
56 IBM Business Process Manager V8.0 Performance Tuning and Best Practices