Nodes

One CPU chip, wether it is multi-core or not, has node associated with it.

Nodes in Linux has a very straight forward naming format for their nodes. Starting at “Node 0”, incrementing for every node (Node 0, Node 1, Node 2, …).

Your computer probably only has 1 node: Node 0. You can see the list of nodes and their associated Zones# by running:

$ less /proc/buddyinfo
Node 0, zone      DMA      1      0      0      1      2      1      1      0      0      1      3 
Node 0, zone    DMA32      3      2      4      3      6      4      4      4      3      1    963 
Node 0, zone   Normal    287    247    152     88     56     21     18      4      5     13   1687

Ignore the number columns. The meaning of them are for memory diagnostics, and will not be going that through here.

References

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