Messages in this thread |  | | Date | Mon, 18 Nov 2013 19:52:13 +0100 | From | Michal Hocko <> | Subject | Re: [patch 2/2] mm, memcg: add memory.oom_control notification for system oom |
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On Thu 14-11-13 15:26:55, David Rientjes wrote: > A subset of applications that wait on memory.oom_control don't disable > the oom killer for that memcg and simply log or cleanup after the kernel > oom killer kills a process to free memory. > > We need the ability to do this for system oom conditions as well, i.e. > when the system is depleted of all memory and must kill a process. For > convenience, this can use memcg since oom notifiers are already present.
Using the memcg interface for "read-only" interface without any plan for the "write" is only halfway solution. We want to handle global OOM in a more user defined ways but we have to agree on the proper interface first. I do not want to end up with something half baked with memcg and a different interface to do the real thing just because memcg turns out to be unsuitable.
And to be honest, the more I am thinking about memcg based interface the stronger is my feeling that it is unsuitable for the user defined OOM policies. But that should be discussed properly (I will send a RFD in the follow up days).
[...] -- Michal Hocko SUSE Labs
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