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

[Balbir Singh <balbir@linux.vnet.ibm.com>]

* 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