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Commit d7ff0dbf authored by Jan-Frode Myklebust's avatar Jan-Frode Myklebust Committed by Linus Torvalds
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[PATCH] oom_adj/oom_score documentation 



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: default avatarJan-Frode Myklebust <mykleb@no.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent db630637

Documentation/filesystems/proc.txt

+18 −0
Original line number Diff line number Diff line
@@ -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



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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

-------------------------------------------------------------



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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.



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Summary