Native memory menu items
When you open a native memory log file in the IBM® Monitoring and Diagnostic Tools - Garbage Collection and Memory Visualizer, a Native Memory Data menu is created on the menu bar. This menu contains menu items for the various types of native memory data, explained in the following table.
| Menu Item | Meaning |
|---|---|
| Free memory | The number of pages on the free list. |
| Paging space | The total number of pages that are reserved or used on paging space by segments that are used by the process. |
| Pinned memory | The number of pages that are pinned in RAM. A pinned page is a page that is always resident in RAM and cannot be paged out. |
| Memory in the system virtual space | The total number of pages in the process virtual space. That is, memory in the system virtual space |
| Memory in use | The number of pages in RAM that are in use by a process, plus the number of persistent pages that belonged to a terminated process and are still resident in RAM. This value is the total size of memory minus the number of pages on the free list. |
| Reserved address space (virtual memory) | The actual amount of the process that is occupying physical memory |