You see this option only if you have selected an agent.
The System Performance page provides details to show:
Overall performance data.
Performance and throughput of service requests.
Resource and service bottlenecks.
For example:
The statistics show a snapshot of what was in memory when you first open the page. Refresh the page to get updates.
These statistics let you ask questions such as:
How many requests are being sent to the server?
How long is the queue?
How many requests are waiting?
How long does it take to provide a response?
How long is it taking for the server to return from service calls?
Should I increase the work manager limits set on the Server Properties page?
After you run a load test, you can watch the metrics and set or reset configuration properties.
Platform Support
As you analyze performance in relation to your application server, keep the following in mind:
Statistics important to consider before changing other settings include:
CPU Utilization—graph over time interval
JVM Memory Usage—graph over time interval
Database Connection Pool—available, in use, waiters, and high water marks
The following metrics interact with the JMX facilities of both the JDK and the application server, which means that support for specific items depends on the platform: