Re: [PATCH] oom_adj/oom_score documentation

From: Jan-Frode Myklebust
Date: Tue Aug 01 2006 - 11:35:20 EST

Got some spelling/language advice from Alan Cox (thanks!), so here's
an updated patch. Hope it reads better now.

Signed-off-by: Jan-Frode Myklebust <mykleb@xxxxxxxxxx>


diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 99902ae..172098a 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -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

@@ -1958,6 +1960,22 @@ a queue must be less or equal then msg_m
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.

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