Although the Windows documentation refers to Mem Usage as the working set, it might be helpful to understand that in this context it really means what many people call the resident set.
Mem Usage: the online help calls this the working set of the process (although many would call it the resident set) — the set of pages currently in main memory.
Mem Usage(内存使用):在线帮助将其称为进程的工作集(尽管很多人称之为驻留集)——当前在主存中的页面集。
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Mem is set up for extensions and refinements that are not yet in use.