Andrew Shewmaker 4eeab4f558
mm: replace hardcoded 3% with admin_reserve_pages knob ...
Add an admin_reserve_kbytes knob to allow admins to change the hardcoded
memory reserve to something other than 3%, which may be multiple
gigabytes on large memory systems. Only about 8MB is necessary to
enable recovery in the default mode, and only a few hundred MB are
required even when overcommit is disabled.
This affects OVERCOMMIT_GUESS and OVERCOMMIT_NEVER.
admin_reserve_kbytes is initialized to min(3% free pages, 8MB)
I arrived at 8MB by summing the RSS of sshd or login, bash, and top.
Please see first patch in this series for full background, motivation,
testing, and full changelog.
[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: make init_admin_reserve() static]
Signed-off-by: Andrew Shewmaker <agshew@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 15:54:36 -07:00
2013-04-29 12:19:23 -07:00
2012-11-26 14:22:21 +01:00
2013-02-13 13:43:02 +01:00
2012-12-17 17:15:25 -08:00
2012-12-15 13:03:48 -08:00
2013-01-22 17:51:01 +00:00
2013-02-21 17:22:25 -08:00
2013-01-09 08:05:11 -08:00
2013-02-27 19:10:22 -08:00
2012-11-09 18:07:11 +05:30
2013-02-28 12:52:24 -08:00
2013-02-02 00:01:16 +01:00
2012-10-08 13:50:12 +10:30
2013-03-05 17:22:08 -08:00
2013-04-29 12:19:23 -07:00
2013-04-03 11:45:38 -07:00
2013-01-22 09:41:43 -08:00
2013-01-01 11:18:26 -02:00
2013-01-20 19:22:19 +10:00
2012-11-19 14:28:24 +01:00
2013-02-26 20:16:07 -08:00
2012-11-14 15:07:18 -08:00
2012-12-14 08:48:59 +01:00
2013-04-21 08:56:48 -07:00
2013-03-22 11:18:34 +01:00
2013-04-02 09:39:55 -07:00
2013-03-11 07:49:37 -07:00
2013-03-25 13:32:20 -07:00
2013-02-27 12:28:30 -08:00
2013-04-02 09:40:03 -07:00
2013-01-21 14:52:42 -08:00
2013-02-06 15:59:30 -08:00
2013-03-02 20:09:50 +00:00
2013-04-08 16:57:15 -07:00
2012-12-06 13:54:48 -05:00
2013-01-26 22:20:06 -08:00
2013-03-19 21:21:51 +09:00
2013-01-10 01:27:46 +01:00
2013-01-24 17:25:13 +01:00
2013-03-04 14:23:11 +01:00
2013-02-15 17:02:25 +11:00
2012-10-02 21:14:29 +10:00
2012-11-16 09:59:58 -08:00
2013-04-17 14:07:25 +02:00
2013-04-06 11:31:30 +01:00
2012-12-17 17:15:22 -08:00
2013-01-15 21:57:44 -08:00
2013-04-04 15:35:39 +02:00
2013-01-03 15:57:16 -08:00
2013-04-29 15:54:36 -07:00
2013-02-28 19:48:26 -08:00
2013-03-11 07:54:29 -07:00
2013-03-28 14:45:56 -07:00
2013-02-13 17:33:20 -02:00
2013-02-24 13:07:18 -08:00
2013-04-29 15:54:36 -07:00
2013-02-18 13:55:24 -08:00
2013-03-01 12:48:36 +01:00
2013-02-22 19:22:52 -08:00
2012-12-18 21:10:22 -08:00
2013-02-21 12:05:51 -08:00
2013-03-03 12:06:09 -08:00
2013-01-08 14:14:55 -08:00
2013-02-22 11:39:13 +01:00
2013-01-11 11:38:03 -08:00
2012-11-14 09:39:44 -08:00
2012-11-21 13:03:01 -08:00
2013-02-27 19:10:23 -08:00
2012-10-24 17:06:43 +02:00
2012-11-29 03:30:34 -08:00
2013-02-27 15:13:36 +05:30
2012-11-19 14:10:53 +01:00
2013-01-17 12:19:09 -08:00
2012-11-11 19:06:00 +01:00
2012-12-10 15:54:27 +01:00
2013-01-11 11:38:03 -08:00
2013-02-27 19:10:21 -08:00
2012-12-05 23:52:10 +00:00
2012-11-27 21:08:57 +01:00
2013-04-20 18:40:36 -07:00
2012-11-28 18:36:06 +10:00
2013-02-19 08:42:37 +01:00
2013-01-31 19:20:33 -05:00
2013-02-08 13:27:13 -02:00
2013-01-08 14:14:55 -08:00
2012-12-12 17:38:33 -08:00
2012-09-26 19:56:15 +02:00
2013-03-18 11:03:29 +01:00
2013-03-08 15:05:34 -08:00
2012-10-09 16:22:40 +09:00
2013-01-03 15:57:16 -08:00
2012-10-06 03:05:01 +09:00
2012-10-01 15:27:48 +02:00
2012-12-17 17:15:23 -08:00
2013-03-08 15:05:34 -08:00
2012-10-16 09:34:01 -07:00
4eeab4f558
