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Getting Familiar with the Latency Graph Tab

The Latency Graph tab (Figure 18-1) displays the Latency Timeline and the Threads graph.

Figure 18-1 The Latency Graph tab

The Latency Graph tab

The Latency Graph tab is divided into the following sections:

  1. Latency Timeline slide bar with Move and Zoom buttons-this timeline shows the entire recording in its full length (the Latency Timeline works the same on all tabs that start with the name Latency, see Using the Latency Timeline Slide Bar for more information).
  2. Filter column-see Filtering Information on how to use this function.
  3. Thread list-a graphic representation of all threads in the recorded JRA file.
  4. Thread magnifyer slide bar-this slide bar lets you magnify the thread you are studying. This way you will better see each event within the thread.
  5. Show Transitions-Selecting this checkbox causes arrows to appear indicating thread transitions. See Showing Thread Transitions.
  6. Show GC backdrop and Show only Operative Set options-the Show GC backdrop option allows you to see each garbage collection as fine lines behind each thread. The Show only Operative Set option allows you to concentrate on studying the events that you have chosen for your operative set (see What is an Operative Set? for a description of the operative set and how to use it).
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