Showing Thread Transitions

Showing Thread Transitions

A latency event in one thread can be associated with another thread. In JRockit Mission Control this is called a transition and is displayed as a small black arrow. A transition could, for instance, happen when one thread that calls Object.notify() and wakes up another thread that is waiting because of an earlier call to Object.wait(). Figure 18-10 shows an example of this feature.

Figure 18-10 Thread Transition Arrows

To enable this feature, select Show Transitions in the Latency Graph Tab.
If you hold your pointer over a transition arrow, a tooltip will appear containing information about the selected transition (Figure 18-11).

Figure 18-11 Transition Tooltip

Transition Tooltip