windows内存管理初探

先介绍一些名词：

Physical Address Extension (PAE) ： 一些x86处理器的属性，使得处理器可以访问超过4G的内存。x86处理器加了一些地址线，所以使用PAE后就可以

http://en.wikipedia.org/wiki/Physical_Address_Extension

http://msdn.microsoft.com/en-us/library/aa366796%28v=vs.85%29.aspx

Comparing PAE and other Large Memory Support

PAE, 4-gigabyte tuning (4GT), and Address Windowing Extensions (AWE) serve different purposes and can be used independently of each other:

• PAE allows the operating system to access and use more than 4 GB of physical memory.
• 4GT increases the portion of the virtual address space that is available to a process from 2 GB to up to 3 GB.
• AWE is a set of APIs that allows a process to allocate nonpaged physical memory and then dynamically map portions of this memory into the virtual address space of the process.