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  • The Xmx is configured as 1500 MB in this example. The "java heap memory (without cache)" is the Xmx memory used; = 842 MB.  This means there is still memory left.
  • Additional to the heap memory, there is the "non heap memory" and the "native memory"; total is about 400 MB.
  • The max memory used is the Xmx + this additional memory; this is 1500 + 400 = 1.9 GbGB.
  • There is also java threads memory in use.  When more displays are opened there are also more threads and more memory is used. This is normally in the order of 50-100 MB.

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