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The KeGetCurrentNodeNumber routine gets the NUMA node number for the logical processor that the caller is running on.
Syntax
USHORT KeGetCurrentNodeNumber();
Return value
KeGetCurrentNodeNumber returns the node number.
Remarks
In a non-uniform memory access (NUMA) multiprocessor architecture, a node is a collection of processors that share fast access to a region of memory. Memory access is non-uniform because a processor can access the memory in its node faster than it can access the memory in other nodes.
In a NUMA multiprocessor system that contains n nodes, the nodes are numbered from 0 to n-1. To get the highest node number (n-1) in the system, call the KeQueryHighestNodeNumber routine.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Available in Windows 7 and later versions of Windows. |
| Target Platform | Universal |
| Header | wdm.h (include Ntddk.h, Wdm.h, Ntddk.h) |
| Library | NtosKrnl.lib |
| DLL | NtosKrnl.exe |
| IRQL | Any level |