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| author | Minchan Kim <minchan.kim@gmail.com> | 2009-09-21 17:03:21 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-22 07:17:39 -0700 |
| commit | 5d3bc2709114b416cab588c577e02c2470e40a6c (patch) | |
| tree | 155d04471863539a03cf94376f6b03f78f9daf16 /Documentation/numastat.txt | |
| parent | a6f9edd65beaef24836e8934c8912c1e974dd45c (diff) | |
| download | linux-5d3bc2709114b416cab588c577e02c2470e40a6c.tar.bz2 | |
mm: fix NUMA accounting in numastat.txt
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>
Diffstat (limited to 'Documentation/numastat.txt')
| -rw-r--r-- | Documentation/numastat.txt | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/Documentation/numastat.txt b/Documentation/numastat.txt index 80133ace1eb2..9fcc9a608dc0 100644 --- a/Documentation/numastat.txt +++ b/Documentation/numastat.txt @@ -7,10 +7,10 @@ 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. +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 |