操作系统真实的虚拟内存是什么样的(二:Windows下内存限制)
在继续整理这份笔记之前，我们先列一下Windows各发行版所支持物理内存的最大限制：1. 内存和地址空间限制
Memory typeLimit in on X86Limit in 64-bit Windows 32位进程用户态的虚拟地址空间
2 GB
Up to 3 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE and 4GT
2 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE cleared (default)
4 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE set
64位进用户态的虚拟地址空
N/A
With IMAGE_FILE_LARGE_ADDRESS_AWARE set (default):
x64:8 TB
Intel Itanium-based systems:7 TB
2 GB with IMAGE_FILE_LARGE_ADDRESS_AWARE cleared
核心态虚拟地址空间
2 GB
From 1 GB to a maximum of 2 GB with 4GT
8 TB
页池
Limited by available kernel-mode virtual address space or the PagedPoolLimit registry key value.
WindowsVista:Limited by available kernel-mode virtual address space. Starting with WindowsVista with Service Pack1 (SP1), the paged pool can also be limited by the PagedPoolLimit registry key value.
Windows Home Server and Windows Server2003:530 MB
WindowsXP:490 MB
128 GB
Windows Server2003 and WindowsXP:Up to 128 GB depending on configuration and RAM.
非页池
Limited by available kernel-mode virtual address space, the NonPagedPoolLimit registry key value, or physical memory.
WindowsVista:Limited only by kernel mode virtual address space and physical memory. Starting with WindowsVista with SP1, the nonpaged pool can also be limited by the NonPagedPoolLimit registry key value.
Windows Home Server, Windows Server2003, and WindowsXP:256 MB, or 128 MB with 4GT.
75% of RAM up to a maximum of 128 GB
WindowsVista:40% of RAM up to a maximum of 128 GB.
Windows Server2003 and WindowsXP:Up to 128 GB depending on configuration and RAM.
System cache virtual address space (physical size limited only by physical memory)
Limited by available kernel-mode virtual address space or the SystemCacheLimit registry key value.
WindowsVista:Limited only by kernel mode virtual address space. Starting with WindowsVista with SP1, system cache virtual address space can also be limited by the SystemCacheLimit registry key value.
Windows Home Server, Windows Server2003, and WindowsXP:860 MB with LargeSystemCache registry key set and without 4GT; up to 448 MB with 4GT.
Always 1 TB regardless of physical RAM
Windows Server2003 and WindowsXP:Up to 1 TB depending on configuration and RAM.
2. 物理内存的限制
2.1 Windows 8
VersionLimit on X86Limit on X64Windows8 Enterprise 4 GB
512 GB
Windows8 Professional 4 GB
512 GB
Windows8 4 GB
128 GB
2.2 Windows Server 2012
VersionLimit on X64Windows Server2012 Datacenter 4 TB
Windows Server2012 Standard 4 TB
Windows Server2012 Essentials 64 GB
Windows Server2012 Foundation 32 GB
Windows Storage Server 2012 Workgroup 32 GB
Windows Storage Server 2012 Standard 4 TB
Hyper-V Server 2012 4 TB
2.3 Windows 7:
VersionLimit on X86Limit on X64Windows7 Ultimate 4 GB
192 GB
Windows7 Enterprise 4 GB
192 GB
Windows7 Professional 4 GB
192 GB
Windows7 Home Premium 4 GB
16 GB
Windows7 Home Basic 4 GB
8 GB
Windows7 Starter 2 GB
N/A
2.4 Windows Server2008R2
VersionLimit on X64Limit on IA64Windows Server2008R2 Datacenter 2 TB
Windows Server2008R2 Enterprise 2 TB
Windows Server2008R2 for Itanium-Based Systems 2 TB
Windows Server2008R2 Foundation 8 GB
Windows Server2008R2 Standard 32 GB
Windows HPC Server 2008 R2 128 GB
Windows Web Server 2008 R2 32 GB
2.5 Windows Server2008
VersionLimit on X86Limit on X64Limit on IA64Windows Server2008 Datacenter 64 GB
1 TB
Windows Server2008 Enterprise 64 GB
1 TB
Windows Server2008 HPC Edition 128 GB
Windows Server2008 Standard 4 GB
32 GB
Windows Server2008 for Itanium-Based Systems 2 TB
Windows Small Business Server 2008 4 GB
32 GB
Windows Web Server 2008 4 GB
32 GB
2.6 WindowsVista
VersionLimit on X86Limit on X64WindowsVista Ultimate 4 GB
128 GB
WindowsVista Enterprise 4 GB
128 GB
WindowsVista Business 4 GB
128 GB
WindowsVista Home Premium 4 GB
16 GB
WindowsVista Home Basic 4 GB
8 GB
WindowsVista Starter 1 GB
2.7 Windows Home Server
Windows Home Server 只有32位版本，最大物理内存4G
2.8 Windows Server2003R2
VersionLimit on X86Limit on X64 Windows Server2003R2 Datacenter Edition
64 GB
(16 GB with 4GT)
1 TB
Windows Server2003R2 Enterprise Edition
64 GB
(16 GB with 4GT)
1 TB
Windows Server2003R2 Standard Edition
4 GB
32 GB
2.9 Windows Server 2003 with Service Pack 2 (SP2)
VersionLimit on X86Limit on X64Limit on IA64 Windows Server2003 with Service Pack2 (SP2), Datacenter Edition
64 GB
(16 GB with 4GT)
1 TB
2 TB
Windows Server2003 with Service Pack2 (SP2), Enterprise Edition
64 GB
(16 GB with 4GT)
1 TB
2 TB
Windows Server 2003 with Service Pack 2 (SP2), Standard Edition
4 GB
32 GB
2.10 Windows Server2003 with Service Pack1 (SP1)
VersionLimit on X86Limit on X64Limit on IA64 Windows Server2003 with Service Pack1 (SP1), Datacenter Edition
64 GB
(16 GB with 4GT)
X64 1 TB
1 TB
Windows Server2003 with Service Pack1 (SP1), Enterprise Edition
64 GB
(16 GB with 4GT)
X64 1 TB
1 TB
Windows Server 2003 with Service Pack 1 (SP1), Standard Edition
4 GB
32 GB
2.11 Windows Server2003
VersionLimit on X86Limit on IA64 Windows Server2003, Datacenter Edition
64 GB
(16 GB with 4GT)
512 GB
Windows Server2003, Enterprise Edition
64 GB
(16 GB with 4GT)
512 GB
Windows Server2003, Standard Edition
4 GB
Windows Server2003, Web Edition
2 GB
Windows Small Business Server 2003
4 GB
Windows Compute Cluster Server2003
32 GB
Windows Storage Server2003, Enterprise Edition
8 GB
Windows Storage Server2003
4 GB
2.12 WindowsXP
ersionLimit on X86Limit on X64Limit on IA64WindowsXP 4 GB
128 GB
128 GB (not supported)
WindowsXP Starter Edition 512 MB
N/A
N/A
2.13 Windows Embedded
VersionLimit on X86Limit on X64 Windows XP Embedded
4 GB
Windows Embedded Standard 2009
4 GB
Windows Embedded Standard 7
4 GB
192 GB
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