Re: [RFC] [PATCH] Cgroup based OOM killer controller

Balbir Singh
2009-01-26T19:54:49Z

* Nikanth Karthikesan <knikanth@suse.de> [2009-01-21 16:38:21]:

> As Alan Cox suggested/wondered in this thread,
> http://lkml.org/lkml/2009/1/12/235 , this is a container group based approach
> to override the oom killer selection without losing all the benefits of the
> current oom killer heuristics and oom_adj interface.
>
> It adds a tunable oom.victim to the oom cgroup. The oom killer will kill the
> process using the usual badness value but only within the cgroup with the
> maximum value for oom.victim before killing any process from a cgroup with a
> lesser oom.victim number. Oom killing could be disabled by setting
> oom.victim=0.

Looking at the patch, I wonder if it is time for user space OOM
notifications that were discussed during the containers mini-summit.
The idea is to inform user space about OOM's and let user space take
action, if no action is taken, the default handler kicks in.

--
Balbir