Getting Started with WebSphere Application Server

Chapter 10 – Tuning a Community Edition server 189
select Information in the console navigation area which opens the server information
page. From this page you can check the following relevant statistics:
• Current memory used
• Most memory used
• Total memory allocated
You can also view a real time graph of the current server memory usage as shown in
Figure 10.10.
Figure 10.10 - Server memory usage dynamic graph
Note:
This feature requires you to install Adobe SVG Viewer when using Internet Explorer in a
Windows environment. If you use Mozilla Firefox or Google Chrome this requirement is not
needed.
10.4.1.2 Using the JConsole graphical tool to monitor
In addition to the monitoring plug-in described in section 10.2, you can use JConsole to
monitor Community Edition. With JConsole, you can monitor JVM memory usage; threads
stack trace, loaded classes, and VM information as well as Community Edition MBeans.
Refer to http://publib.boulder.ibm.com/wasce/V2.1.1/en/working-with-jconsole.html for more
information.
10.4.1.3 Tuning the Java heap size
The Java heap is the runtime space from which Java objects are allocated. The heap size
determines the time and the frequency of the garbage collection (GC) activities.