Re: [v7 2/5] mm, oom: cgroup-aware OOM killer

From: Michal Hocko
Date: Mon Sep 11 2017 - 04:49:40 EST

On Thu 07-09-17 11:18:18, Cristopher Lameter wrote:
> On Mon, 4 Sep 2017, Roman Gushchin wrote
> > To address these issues, cgroup-aware OOM killer is introduced.
> You are missing a major issue here. Processes may have allocation
> constraints to memory nodes, special DMA zones etc etc. OOM conditions on
> such resource constricted allocations need to be dealt with. Killing
> processes that do not allocate with the same restrictions may not do
> anything to improve conditions.

memcg_oom_badness tries to be node aware - very similar to what the
oom_badness does for the regular oom killer. Or do you have anything
else in mind?
Michal Hocko