Messages in this thread Patch in this message | | | Date | Tue, 1 Aug 2006 16:13:08 +0200 | From | Jan-Frode Myklebust <> | Subject | [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>
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diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 99902ae..81bb8ea 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 ------------------------------------------------------------------------------ Preface @@ -1958,6 +1960,21 @@ 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 shall +be killed in an out-of-memory situation. Giving it a high score, increase the +likelihood of this process being killed by the oom-killer. Valid values are in +the range [-16:15], plus the special value '-17', which defeat the oom-killer +altogether. + +2.13 /proc/<pid>/oom_score - Display current oom-killer score +------------------------------------------------------------- + +This file can be used to check what 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 will be killed in an out-of-memory situation. ------------------------------------------------------------------------------ Summary - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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