Monitoring Container Usage
When you select a container (folder) in the namespace tree of a realm and go to the Monitor tab, you can find usage information, such as heap memory usage history, CPU and disk space usage, and JVM GC stats, based on the channels and queues in the container. In addition, you can view the number of mounted realms, channels, and queues in the container.
For each channel and queue, you can also find the following details in the usage details table:
Name - The name of the channel or queue.
Connections - The number of consumers the channel or queue has.
Published - The rate of events published per status interval.
Consumed - The rate of events consumed per status interval.
Memory (bytes) - The number of bytes the channel or queue uses from the JVM memory.
% Memory - The percentage of overall JVM memory used by the channel or queue.
Disk (KB) - The amount of disk space in KB used by the channel or queue when the channel or queue is of persistent or mixed type.
Creating Monitor Graphs
On the
Monitor tab, you can also create a graph of channel and queue usage. The graph uses a 3D graph package from SourceForge (
http://sourceforge.net/projects/jfreechart/) to display the items in the usage details table as columns in a 3D vertical bar chart. You can create a graph for each usage metric and update the graph in real time.
To create a graph, select a column in the usage details table and click the
Bar Graph button.
To update a graph in real time, right-click anywhere in the graph and select
Start Live Update.
To stop live updates, right-click in the graph and select
Stop Live Updates.