Shared memory is pinned to RAM and cannot be swapped out.
功能内存与RAM固定，因而不能交换出去。
Limit: Because Shared memory is pinned to physical RAM, it will never be swapped out.
限制：因为共享内存是固定到物理ram的，所以这种内存不会被换出。
The page columns show the pages of memory swapped in and out to disk.
页面列显示了从磁盘交换进来的和交换到磁盘的内存页面。
The page columns show the pages of memory swapped in and out to disk.
页面列显示了从磁盘交换进来的和交换到磁盘的内存页面。
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