kernel26-2.6.12-alx-r9/Documentation/numastat.txt


Numa policy hit/miss statistics

/sys/devices/system/node/node*/numastat

All units are pages. Hugepages have separate counters.

numa_hit			A process wanted to allocate memory from this node,
					and succeeded.
numa_miss			A process wanted to allocate memory from this node,
					but ended up with memory from another.
numa_foreign		A process wanted to allocate on another node,
				    but ended up with memory from this one.
local_node			A process ran on this node and got memory from it.
other_node			A process ran on this node and got memory from another node.
interleave_hit 		Interleaving wanted to allocate from this node
					and succeeded.

For easier reading you can use the numastat utility from the numactl package
(ftp://ftp.suse.com/pub/people/ak/numa/numactl*). Note that it only works
well right now on machines with a small number of CPUs.

1
2	Numa policy hit/miss statistics
3
4	/sys/devices/system/node/node*/numastat
5
6	All units are pages. Hugepages have separate counters.
7
8	numa_hit A process wanted to allocate memory from this node,
9	and succeeded.
10	numa_miss A process wanted to allocate memory from this node,
11	but ended up with memory from another.
12	numa_foreign A process wanted to allocate on another node,
13	but ended up with memory from this one.
14	local_node A process ran on this node and got memory from it.
15	other_node A process ran on this node and got memory from another node.
16	interleave_hit Interleaving wanted to allocate from this node
17	and succeeded.
18
19	For easier reading you can use the numastat utility from the numactl package
20	(ftp://ftp.suse.com/pub/people/ak/numa/numactl*). Note that it only works
21	well right now on machines with a small number of CPUs.
22