Messages in this thread | | | Date | Tue, 1 Aug 2006 09:32:24 -0700 | From | "Randy.Dunlap" <> | Subject | Re: [PATCH] oom_adj/oom_score documentation |
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On Tue, 1 Aug 2006 16:13:08 +0200 Jan-Frode Myklebust wrote:
> 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.
Thanks, it's needed.
A few comments below.
> Signed-off-by: Jan-Frode Myklebust <mykleb@no.ibm.com> > > --- > > 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
Drop the comma. "increases"
> +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
"defeats"
> +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
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