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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-01-07 21:08:22 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 11:31:08 -0500
commit7f016ee8b6a9a43f768e6252021f169abec4fa1f (patch)
tree68498191489e051a23da0d39de2b0257714e58b0 /Documentation
parent9439c1c95b5c25b8031b2a7eb7e1590eb84be7f5 (diff)
memcg: show reclaim stat
Add the following four fields to memory.stat file: - inactive_ratio - recent_rotated_anon - recent_rotated_file - recent_scanned_anon - recent_scanned_file Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Hugh Dickins <hugh@veritas.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/controllers/memory.txt25
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/controllers/memory.txt b/Documentation/controllers/memory.txt
index 09e1c737d285..d71745cc2f00 100644
--- a/Documentation/controllers/memory.txt
+++ b/Documentation/controllers/memory.txt
@@ -289,6 +289,31 @@ will be charged as a new owner of it.
289 Because rmdir() moves all pages to parent, some out-of-use page caches can be 289 Because rmdir() moves all pages to parent, some out-of-use page caches can be
290 moved to the parent. If you want to avoid that, force_empty will be useful. 290 moved to the parent. If you want to avoid that, force_empty will be useful.
291 291
2925.2 stat file
293 memory.stat file includes following statistics (now)
294 cache - # of pages from page-cache and shmem.
295 rss - # of pages from anonymous memory.
296 pgpgin - # of event of charging
297 pgpgout - # of event of uncharging
298 active_anon - # of pages on active lru of anon, shmem.
299 inactive_anon - # of pages on active lru of anon, shmem
300 active_file - # of pages on active lru of file-cache
301 inactive_file - # of pages on inactive lru of file cache
302 unevictable - # of pages cannot be reclaimed.(mlocked etc)
303
304 Below is depend on CONFIG_DEBUG_VM.
305 inactive_ratio - VM inernal parameter. (see mm/page_alloc.c)
306 recent_rotated_anon - VM internal parameter. (see mm/vmscan.c)
307 recent_rotated_file - VM internal parameter. (see mm/vmscan.c)
308 recent_scanned_anon - VM internal parameter. (see mm/vmscan.c)
309 recent_scanned_file - VM internal parameter. (see mm/vmscan.c)
310
311 Memo:
312 recent_rotated means recent frequency of lru rotation.
313 recent_scanned means recent # of scans to lru.
314 showing for better debug please see the code for meanings.
315
316
2926. Hierarchy support 3176. Hierarchy support
293 318
294The memory controller supports a deep hierarchy and hierarchical accounting. 319The memory controller supports a deep hierarchy and hierarchical accounting.