adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-27 03:06:10 +00:00
Code Issues Projects Releases Packages Wiki Activity

mm: fix NUMA accounting in numastat.txt

Browse source 
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>
This commit is contained in:
Minchan Kim 2009-09-21 17:03:21 -07:00 committed by Linus Torvalds
parent a6f9edd65b
commit 5d3bc27091
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
Documentation/numastat.txt
View file

@ -7,10 +7,10 @@ All units are pages. Hugepages have separate counters.
numa_hit A process wanted to allocate memory from this node, numa_hit A process wanted to allocate memory from this node,
and succeeded. and succeeded.
numa_miss A process wanted to allocate memory from this node, numa_miss A process wanted to allocate memory from another node,
but ended up with memory from another. but ended up with memory from this node.
numa_foreign A process wanted to allocate on another node, numa_foreign A process wanted to allocate on this node,
but ended up with memory from this one. but ended up with memory from another one.
local_node A process ran on this node and got memory from it. 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. other_node A process ran on this node and got memory from another node.
interleave_hit Interleaving wanted to allocate from this node interleave_hit Interleaving wanted to allocate from this node