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| author | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2009-09-21 17:01:33 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-22 07:17:27 -0700 |
| commit | 4b02108ac1b3354a22b0d83c684797692efdc395 (patch) | |
| tree | 9f65d6e8e35ddce940e7b9da6305cf5a19e5904e /mm/page_alloc.c | |
| parent | c6a7f5728a1db45d30df55a01adc130b4ab0327c (diff) | |
| download | linux-4b02108ac1b3354a22b0d83c684797692efdc395.tar.gz linux-4b02108ac1b3354a22b0d83c684797692efdc395.tar.bz2 linux-4b02108ac1b3354a22b0d83c684797692efdc395.zip | |
mm: oom analysis: add shmem vmstat
Recently we encountered OOM problems due to memory use of the GEM cache.
Generally a large amuont of Shmem/Tmpfs pages tend to create a memory
shortage problem.
We often use the following calculation to determine the amount of shmem
pages:
shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES
however the expression does not consider isolated and mlocked pages.
This patch adds explicit accounting for pages used by shmem and tmpfs.
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 4e050f325ebd..e50c22545b8f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2139,7 +2139,7 @@ void show_free_areas(void) " unevictable:%lu" " dirty:%lu writeback:%lu unstable:%lu buffer:%lu\n" " free:%lu slab_reclaimable:%lu slab_unreclaimable:%lu\n" - " mapped:%lu pagetables:%lu bounce:%lu\n", + " mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n", global_page_state(NR_ACTIVE_ANON), global_page_state(NR_ACTIVE_FILE), global_page_state(NR_INACTIVE_ANON), @@ -2153,6 +2153,7 @@ void show_free_areas(void) global_page_state(NR_SLAB_RECLAIMABLE), global_page_state(NR_SLAB_UNRECLAIMABLE), global_page_state(NR_FILE_MAPPED), + global_page_state(NR_SHMEM), global_page_state(NR_PAGETABLE), global_page_state(NR_BOUNCE)); @@ -2175,6 +2176,7 @@ void show_free_areas(void) " dirty:%lukB" " writeback:%lukB" " mapped:%lukB" + " shmem:%lukB" " slab_reclaimable:%lukB" " slab_unreclaimable:%lukB" " kernel_stack:%lukB" @@ -2200,6 +2202,7 @@ void show_free_areas(void) K(zone_page_state(zone, NR_FILE_DIRTY)), K(zone_page_state(zone, NR_WRITEBACK)), K(zone_page_state(zone, NR_FILE_MAPPED)), + K(zone_page_state(zone, NR_SHMEM)), K(zone_page_state(zone, NR_SLAB_RECLAIMABLE)), K(zone_page_state(zone, NR_SLAB_UNRECLAIMABLE)), zone_page_state(zone, NR_KERNEL_STACK) * |