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[PATCH] oom_adj/oom_score documentation

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I was looking for the a way around an OOM-problem, and found a couple of
undocumented new features for tuning the OOM-score of individual processes.
 Here's a small documentation patch for /proc/<pid>/oom_adj and
/proc/<pid>/oom_score.

Signed-off-by: Jan-Frode Myklebust <mykleb@no.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan-Frode Myklebust 2006-09-29 01:59:45 -07:00 committed by Linus Torvalds
parent db630637b2
commit d7ff0dbf45
1 changed files with 18 additions and 0 deletions
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18
Documentation/filesystems/proc.txt
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@ -39,6 +39,8 @@ Table of Contents
2.9 Appletalk
2.10 IPX
2.11 /proc/sys/fs/mqueue - POSIX message queues filesystem
2.12 /proc/<pid>/oom_adj - Adjust the oom-killer score
2.13 /proc/<pid>/oom_score - Display current oom-killer score
------------------------------------------------------------------------------
Preface
@ -1962,6 +1964,22 @@ a queue must be less or equal then msg_max.
maximum message size value (it is every message queue's attribute set during
its creation).
2.12 /proc/<pid>/oom_adj - Adjust the oom-killer score
------------------------------------------------------
This file can be used to adjust the score used to select which processes
should be killed in an out-of-memory situation. Giving it a high score will
increase the likelihood of this process being killed by the oom-killer. Valid
values are in the range -16 to +15, plus the special value -17, which disables
oom-killing altogether for this process.
2.13 /proc/<pid>/oom_score - Display current oom-killer score
-------------------------------------------------------------
------------------------------------------------------------------------------
This file can be used to check the current score used by the oom-killer is for
any given <pid>. Use it together with /proc/<pid>/oom_adj to tune which
process should be killed in an out-of-memory situation.
------------------------------------------------------------------------------
Summary