Messages in this thread | | | Date | Tue, 3 Oct 2017 13:49:36 +0100 | From | Roman Gushchin <> | Subject | Re: [v9 4/5] mm, oom: add cgroup v2 mount option for cgroup-aware OOM killer |
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On Tue, Oct 03, 2017 at 01:50:36PM +0200, Michal Hocko wrote: > On Wed 27-09-17 14:09:35, Roman Gushchin wrote: > > Add a "groupoom" cgroup v2 mount option to enable the cgroup-aware > > OOM killer. If not set, the OOM selection is performed in > > a "traditional" per-process way. > > > > The behavior can be changed dynamically by remounting the cgroupfs. > > I do not have a strong preference about this. I would just be worried > that it is usually systemd which tries to own the whole hierarchy
I actually like this fact.
It gives us the opportunity to change the default behavior for most users at the point when we'll be sure that new behavior is better; but at the same time we'll save full compatibility on the kernel level. With growing popularity of memory cgroups, I don't think that hiding this functionality with a boot option makes any sense. It's just not this type of feature, that should be hidden.
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