HPjmeter 4.3 User's Guide

Double-clicking on the alert in the main window displays the uncaught exception window. The

window shows:

• Thread name

• Exception

• Source location where the exception was thrown

Figure 32 Abnormal Thread Termination Alert Visualizer

You can use this information to debug the cause of the exception. For example, each row in the

Abnormal Thread Termination window represents a thread in the Thread Histogram window.

You can open the Thread Histogram metric, and notice that when a thread terminates, the associated

bar in the Thread Histogram display is shorter than the others. Note that the thread histogram does

not distinguish between threads that terminate normally or abnormally.

Symptoms that an application might show if it has abnormally terminating threads include:

• Poor application response.

If worker threads terminate, then the application might continue to work, but at a reduced

speed.

• The entire application terminates.

Usually the application itself does not terminate as the result of one thread dying. However,

it is possible that the entire application might eventually terminate if it cannot handle the loss

of a thread.