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SystemPages

HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management

Data type

Range

Default value

REG_DWORD

0x0 | 0x1–0xFFFFFFFE entries | 0xFFFFFFFF

0x0

Description

Defines the number of system page table entries that are reserved for mapping I/O buffers and other information into the system address space. Each system page table entry maps one page.

Value

Meaning

0x0

The system calculates an optimal number of page table entries based on the platform type and the amount of memory available to the system. The system adjusts this value if the amount of memory changes.

0x1–0xFFFFFFFE

Specifies the number of reserved page table entries. This value takes precedence over the system's calculated value, and it prevents the system from adjusting the value.

0xFFFFFFFF

Maximize system pages. The system creates the largest number of page table entries possible within physical memory. The system monitors and adjusts this value dynamically when the configuration changes.

Caution

Do not change the value of this entry. Changing it prevents the system from calculating an optimal value for your system and adjusting the value when your system changes.

Related Entries

PagedPoolSize

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