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How can the resident memory be smaller than the allocated memory?

16 Jan 2015 4:11 pm || 0

Normally the allocated memory should be fully contained in the resident memory, nevertheless there are a few exceptions:

  • If parts of the virtual memory are paged out to disk, the resident memory can be smaller than the allocated memory.
  • There are technical constellations where parts of the heap memory and the row store shared memory are marked as used, but not as resident.