Verbose GC
Verbose GC data interpretation and sequence
As you can see from the verbose GC output, the OldGen space was at 340 MB after the initial loading of 3 M String instances in our HashMap. It did go down to 126 MB following the removal of 2 M String instances.
Now find below explanation and snapshots on how you can read the GC output data in more detail for each Java Heap space.
## YoungGen space analysis
## OldGen space analysis
## PermGen space analysis
## Java Heap breakdown analysis