From: Jan-Frode Myklebust Date: Fri, 29 Sep 2006 08:59:45 +0000 (-0700) Subject: [PATCH] oom_adj/oom_score documentation X-Git-Tag: v2.6.19-rc1~788 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7ff0dbf45ee8a7c4802ff46844e6e8167b7f360;p=linux-2.6 [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//oom_adj and /proc//oom_score. Signed-off-by: Jan-Frode Myklebust Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 7db71d6fba..7240ee7515 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//oom_adj - Adjust the oom-killer score + 2.13 /proc//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//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//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 . Use it together with /proc//oom_adj to tune which +process should be killed in an out-of-memory situation. ------------------------------------------------------------------------------ Summary