When applications or drivers perform high-speed network or disk access, they often need to "lock" pages of memory so the hardware can read from or write to them directly without the system moving that data to the page file.

Navigate to the following path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management Look for a value named IoPageLockLimit .

Here is the relevant technical information:

The value is a located at: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management . Historical Recommended Values

It defines the that can be "locked" for I/O operations at any given time. Locking pages prevents the virtual memory manager from paging them out to disk, ensuring they remain resident in RAM for direct memory access (DMA) transfers.