如果内存使用量过大，那么AIX会把内存页面交换到分页空间(磁盘)。

If memory is overused (over-committed), then AIX will page to paging space (disk).

youdao

在此之后，如果内核预计必须为请求内存的进程分配内存，它就会开始把一些页面交换到磁盘。

Soon after that, the kernel starts swapping some of those pages to disk in anticipation of having to allocate memory to the process that's allocating memory.

youdao

LPAR2(也有4gb的内存)比较忙，有时候需要更多内存，偶尔会把页面交换到分页空间。

LPAR2 (also with 4gb of memory) was busier and at times required more memory and occasionally it would page to paging space.

youdao