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| author | Jan-Frode Myklebust <mykleb@no.ibm.com> | 2006-09-29 12:59:45 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 20:18:10 +0400 |
| commit | d7ff0dbf45ee8a7c4802ff46844e6e8167b7f360 (patch) | |
| tree | 42a5f6bd33a5decb8c3a0bb6ad8fcce3120b7e56 | |
| parent | db630637b2f192bea2ba1c000e9cbe4e542a03ea (diff) | |
| download | linux-d7ff0dbf45ee8a7c4802ff46844e6e8167b7f360.tar.xz | |
[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: Jan-Frode Myklebust <mykleb@no.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | Documentation/filesystems/proc.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt index 7db71d6fba82..7240ee7515de 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 @@ -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 |