In some scenarios, it may be necessary to provide some buffering between the agent and the Agent Controller. Buffering is done by using a data channel between the agent and the Agent Controller. Data channels are desirable in situations where agent performance is highly important. Without a buffer, it is possible that the agent may become blocked when performing output as the test client may not be able to process the output as quickly as required.
The data channel is configured with the <Agent> element in the configuration file of the plug-in that contains the agent. For example, the data channel for the Java Profiling Agent is configured by changing its <Agent> element in plugins/org.eclipse.tptp.platform.collection.framework_<version>/config/pluginconfig.xml.
To modify the <Agent> element in the configuration file:
<Agent name="Java Profiling Agent" type="Profiler"
dataChannelSize="64MB"> </Agent>
To allow the Agent Controller to communicate with a large number of agents simultaneously, the IPCSHMNSEGS parameter in the MVS BPXPRMxx parmlib member must be set to an appropriate value. The IPCSHMNSEGS parameter specifies the maximum number of attached shared memory segments or data channels for each address space. The default value is 10. A value of 50 would enable 50 agents to communicate with the Agent Controller simultaneously.
Related tasks
Locating the configuration files
Administering the Agent Controller