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Myth - "Setting DisablePagingExecutive to 1 improves performance


ATi7500

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Myth - "Setting DisablePagingExecutive to 1 improves performance by preventing the kernel from paging to disk."

 

Reality - "DisablePagingExecutive applies only to ntoskrnl.exe. It does not apply to win32k.sys (much larger than ntoskrnl.exe!), the pageable portions of other drivers, the paged pool and of course the file system cache. All of which live in kernel address space and are paged to disk. On low memory systems this can force application code to be needlessly paged and reduce performance. If you have more than enough RAM for your workload, yes, this won't hurt, but then again, if you have more than enough RAM for your workload, the system isn't paging very much of that stuff anyway. This setting is useful when debugging drivers and generally recommended for use only on servers running a limited well-known set of applications."

 

DisablePagingExecutive (Microsoft)

http://technet2.microsoft.com/WindowsServer/en/library/3d3b3c16-c901-46de-8485-166a819af3ad1033.mspx?mfr=true

 

Virtual memory vs. paging and all that (2CPU.com)

http://forums.2cpu.com/showthread.php?t=10062

 

Yet another silly set of Windows tweaks (Ed Bott, Author: Microsoft Windows XP Inside Out)

http://www.edbott.com/weblog/?p=1298

 

Thanks,

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