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http://technet.microsoft.com/en-us/library/cc959494.aspx
IoPageLockLimit
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
Data type
Range
Default value
REG_DWORD
0x0 | 0x1–0xFFFFFFFF bytes
0
Description
Specifies the maximum number of bytes that can be locked for I/O operations.
Value
Meaning
0x0
The system sets the lock limit to 512 KB.
0x1–0xFFFFFFFF bytes
The value entered takes precedence over the system default and is used as the I/O lock limit.
Cc959494.note(en-us,TechNet.10).gif Note
The amount of physical memory on the computer determines the maximum lock limit. Do not set the lock limit above the following values:
Amount of physical memory
Maximum lock limit
Less than 64 MB
Physical memory minus 7 MB
64 MB–500 MB
Physical memory minus 16 MB
512 MB and greater
Physical memory minus 64 MB
http://technet.microsoft.com/en-us/library/cc959494.aspx
IoPageLockLimit
HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management
Data type
Range
Default value
REG_DWORD
0x0 | 0x1–0xFFFFFFFF bytes
0
Description
Specifies the maximum number of bytes that can be locked for I/O operations.
Value
Meaning
0x0
The system sets the lock limit to 512 KB.
0x1–0xFFFFFFFF bytes
The value entered takes precedence over the system default and is used as the I/O lock limit.
Cc959494.note(en-us,TechNet.10).gif Note
The amount of physical memory on the computer determines the maximum lock limit. Do not set the lock limit above the following values:
Amount of physical memory
Maximum lock limit
Less than 64 MB
Physical memory minus 7 MB
64 MB–500 MB
Physical memory minus 16 MB
512 MB and greater
Physical memory minus 64 MB
