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The Garbage Collections section on the GC Events tab is a list of all garbage collections that have taken place during the recording. It lists all garbage collection events during the recording, provided that the garbage collection sampling was enabled. A garbage collection can be an old collection, which is a garbage collection in the old space of the Java heap or a young collection, which is a garbage collection in the young space (nursery).
The garbage collection index number is now visible in the GC Chart and the Details section has also changed to show all the specifics about that garbage collection.
The Details section changes name depending on if you selected an old collection or a young collection (see Figure 6-4).
The garbage collection index numbers are now visible in the GC Chart (see Figure 6-5).
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