mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
5d3bc27091
In Documentation/numastat.txt, it confused me. For example, there are nodes [0,1] in system. barrios:~$ cat /proc/zoneinfo | egrep 'numa|zone' Node 0, zone DMA numa_hit 33226 numa_miss 1739 numa_foreign 27978 .. .. Node 1, zone DMA numa_hit 307 numa_miss 46900 numa_foreign 0 1) In node 0, NUMA_MISS means it wanted to allocate page in node 1 but ended up with page in node 0 2) In node 0, NUMA_FOREIGN means it wanted to allocate page in node 0 but ended up with page from Node 1. But now, numastat explains it oppositely about (MISS, FOREIGN). Let's fix up with viewpoint of zone. Signed-off-by: Minchan Kim <minchan.kim@gmail.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
23 lines
866 B
Plaintext
23 lines
866 B
Plaintext
|
|
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 another node,
|
|
but ended up with memory from this node.
|
|
numa_foreign A process wanted to allocate on this node,
|
|
but ended up with memory from another 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.
|
|
|