The performance of a Java™ application
can be affected adversely when the Java virtualization
agent is loaded into the application. For example, memory usage may
increase or there might be pauses during application startup. To prevent
these problems from occurring, modify performance parameters supported
by the Java virtualization agent.
Procedure
- If you observe "out of memory" errors, increase the size
of the permanent generation space by modifying the size of the -XX:MaxPermSize JVM
parameter of the Java application.
- If you do not require the Java application
to pause during start to collect recording and intercept rules from IBM® Rational® Test Control Panel,
edit the invocation command line to include the greenhat.javaagent.waitForRules property
as follows:
"%JAVA_HOME\bin\java" "-javaagent:%JAVA_AGENT%" -Dgreenhat.javaagent.waitForRules=-1 or X (milliseconds) –jar Java application name.jar
Setting
the Dgreenhat.javaagent.waitForRules property to -1 prevents
the Java virtualization agent
from waiting for recording or routing rules from Rational Test Control Panel.
Alternatively, setting the Dgreenhat.javaagent.waitForRules property
to X milliseconds causes the Java virtualization agent to wait X milliseconds
when starting for recording or routing rules from Rational Test Control Panel.
For
example, to make the Java virtualization
agent to wait 10 seconds when starting for recording or routing rules
from Rational Test Control Panel,
edit the invocation command line as follows:
"%JAVA_HOME\bin\java" "-javaagent:%JAVA_AGENT%" -Dgreenhat.javaagent.waitForRules=10000 –jar Java application name.jar
- To make the Java application
to wait for a specific number of seconds for Rational
Integration Tester to
determine how to process an intercepted message, edit the invocation
command line to include the greenhat.javaagent.dispatchTimeout property
as follows:
"%JAVA_HOME\bin\java" "-javaagent:%JAVA_AGENT%" -Dgreenhat.javaagent.dispatchTimeout=X (milliseconds) -jar Java application name.jar
For
example, if you want the Java application
to wait 60 seconds for Rational
Integration Tester to determine how to process
an intercepted message, edit the invocation command line as follows:
"%JAVA_HOME\bin\java" "-javaagent:%JAVA_AGENT%" -Dgreenhat.javaagent.dispatchTimeout=60000 –jar Java application name.jar