Non-Paged Kernel Memory

**Dzomlija** · 12-01-2008

In Windows XP, there was a registry setting that when set prevented the Kernel from being paged out to the swapfile. I don't remember what this specific key was, but does anybody know of a similar setting for Vista x64?

I was just curious...

**Dwarf** · 12-01-2008

Hi Peter,

The key is still there in the registry. The default value is 0, but you will need to set it to 1.

Code:

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management]
"DisablePagingExecutive"=dword:00000001

**Dzomlija** · 12-01-2008

	Quote:	Dwarf
	Hi Peter, The key is still there in the registry. The default value is 0, but you will need to set it to 1. Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management] "DisablePagingExecutive"=dword:00000001

Thanks, Dwarf. I want to do some benchmarking both with and without the kernel locked into memory, so I can gauge the impact on performance, if any.

**archie123** · 12-01-2008

nice one....can you post your results back here??

**Dzomlija** · 12-01-2008

I downloaded and installed Geekbench 2.0.19, and here are the results that I got:

Before Locking the Vista Kernel : 3550
After Locking the Vista Kernel : 3607

Not a huge increase in overall score, but the system does feel more responsive. Maybe the results differences would be more profound if I increased memory from 4GB to 8GB. And desktop availability from login would also appear to happen a little more quickly than usual.

I've attached the Geekbench results files. I don't have a Geekbench serial number, so I cannot perform the 64-Bit benchmarks.

12-01-2008	#1 (permalink)
Dzomlija Resistance is Futile Join Date: Aug 2007 Windows Vista x64 Ultimate 2,217 posts	Non-Paged Kernel Memory In Windows XP, there was a registry setting that when set prevented the Kernel from being paged out to the swapfile. I don't remember what this specific key was, but does anybody know of a similar setting for Vista x64? I was just curious...
My System Specs

12-01-2008	#2 (permalink)
Dwarf The Contemplator Join Date: Mar 2008 Vista Home Premium 32-bit & Vista Ultimate 64-bit both Service Pack 2 W7 Ultimate RC 7229 32 & 64 1,812 posts	Re: Non-Paged Kernel Memory Hi Peter, The key is still there in the registry. The default value is 0, but you will need to set it to 1. Code: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management] "DisablePagingExecutive"=dword:00000001
My System Specs

12-01-2008	#4 (permalink)
archie123 Member Join Date: Jul 2008 Vista Home Premium 64bit SP2 747 posts	Re: Non-Paged Kernel Memory nice one....can you post your results back here??
My System Specs

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