From: Michal Hocko <mhocko@kernel.org>
To: Shakeel Butt <shakeelb@google.com>
Cc: Tim Hockin <thockin@hockin.org>, Roman Gushchin <guro@fb.com>,
Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>,
kernel-team@fb.com, David Rientjes <rientjes@google.com>,
Linux MM <linux-mm@kvack.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Andrew Morton <akpm@linux-foundation.org>,
Cgroups <cgroups@vger.kernel.org>,
linux-doc@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [v8 0/4] cgroup-aware OOM killer
Date: Mon, 2 Oct 2017 22:55:52 +0200 [thread overview]
Message-ID: <20171002205552.3ygveyd7yrcvkz7u@dhcp22.suse.cz> (raw)
In-Reply-To: <CALvZod5qiF_7k=D7uiF=GwQEgc7Vztn-DNYMxsnmKGrk3DaYBQ@mail.gmail.com>
On Mon 02-10-17 13:24:25, Shakeel Butt wrote:
> On Mon, Oct 2, 2017 at 12:56 PM, Michal Hocko <mhocko@kernel.org> wrote:
> > On Mon 02-10-17 12:45:18, Shakeel Butt wrote:
> >> > I am sorry to cut the rest of your proposal because it simply goes over
> >> > the scope of the proposed solution while the usecase you are mentioning
> >> > is still possible. If we want to compare intermediate nodes (which seems
> >> > to be the case) then we can always provide a knob to opt-in - be it your
> >> > oom_gang or others.
> >>
> >> In the Roman's proposed solution we can already force the comparison
> >> of intermediate nodes using 'oom_group', I am just requesting to
> >> separate the killall semantics from it.
> >
> > oom_group _is_ about killall semantic. And comparing killable entities
> > is just a natural thing to do. So I am not sure what you mean
> >
>
> I am saying decouple the notion of comparable entities and killable entities.
There is no strong (bijection) relation there. Right now killable
entities are comparable (which I hope we agree is the right thing to do)
but nothing really prevents even non-killable entities to be compared in
the future.
--
Michal Hocko
SUSE Labs
WARNING: multiple messages have this Message-ID (diff)
From: Michal Hocko <mhocko@kernel.org>
To: Shakeel Butt <shakeelb@google.com>
Cc: Tim Hockin <thockin@hockin.org>, Roman Gushchin <guro@fb.com>,
Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>,
kernel-team@fb.com, David Rientjes <rientjes@google.com>,
Linux MM <linux-mm@kvack.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
Andrew Morton <akpm@linux-foundation.org>,
Cgroups <cgroups@vger.kernel.org>,
linux-doc@vger.kernel.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [v8 0/4] cgroup-aware OOM killer
Date: Mon, 2 Oct 2017 22:55:52 +0200 [thread overview]
Message-ID: <20171002205552.3ygveyd7yrcvkz7u@dhcp22.suse.cz> (raw)
In-Reply-To: <CALvZod5qiF_7k=D7uiF=GwQEgc7Vztn-DNYMxsnmKGrk3DaYBQ@mail.gmail.com>
On Mon 02-10-17 13:24:25, Shakeel Butt wrote:
> On Mon, Oct 2, 2017 at 12:56 PM, Michal Hocko <mhocko@kernel.org> wrote:
> > On Mon 02-10-17 12:45:18, Shakeel Butt wrote:
> >> > I am sorry to cut the rest of your proposal because it simply goes over
> >> > the scope of the proposed solution while the usecase you are mentioning
> >> > is still possible. If we want to compare intermediate nodes (which seems
> >> > to be the case) then we can always provide a knob to opt-in - be it your
> >> > oom_gang or others.
> >>
> >> In the Roman's proposed solution we can already force the comparison
> >> of intermediate nodes using 'oom_group', I am just requesting to
> >> separate the killall semantics from it.
> >
> > oom_group _is_ about killall semantic. And comparing killable entities
> > is just a natural thing to do. So I am not sure what you mean
> >
>
> I am saying decouple the notion of comparable entities and killable entities.
There is no strong (bijection) relation there. Right now killable
entities are comparable (which I hope we agree is the right thing to do)
but nothing really prevents even non-killable entities to be compared in
the future.
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2017-10-02 20:55 UTC|newest]
Thread overview: 168+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-11 13:17 [v8 0/4] cgroup-aware OOM killer Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-11 13:17 ` [v8 1/4] mm, oom: refactor the oom_kill_process() function Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-11 20:51 ` David Rientjes
2017-09-11 20:51 ` David Rientjes
2017-09-14 13:42 ` Michal Hocko
2017-09-14 13:42 ` Michal Hocko
2017-09-11 13:17 ` [v8 2/4] mm, oom: cgroup-aware OOM killer Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-13 20:46 ` David Rientjes
2017-09-13 20:46 ` David Rientjes
2017-09-13 21:59 ` Roman Gushchin
2017-09-13 21:59 ` Roman Gushchin
2017-09-13 21:59 ` Roman Gushchin
2017-09-11 13:17 ` [v8 3/4] mm, oom: add cgroup v2 mount option for " Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-11 20:48 ` David Rientjes
2017-09-11 20:48 ` David Rientjes
2017-09-12 20:01 ` Roman Gushchin
2017-09-12 20:01 ` Roman Gushchin
2017-09-12 20:23 ` David Rientjes
2017-09-12 20:23 ` David Rientjes
2017-09-13 12:23 ` Michal Hocko
2017-09-13 12:23 ` Michal Hocko
2017-09-11 13:17 ` [v8 4/4] mm, oom, docs: describe the " Roman Gushchin
2017-09-11 13:17 ` Roman Gushchin
2017-09-11 20:44 ` [v8 0/4] " David Rientjes
2017-09-11 20:44 ` David Rientjes
2017-09-13 12:29 ` Michal Hocko
2017-09-13 12:29 ` Michal Hocko
2017-09-13 20:46 ` David Rientjes
2017-09-13 20:46 ` David Rientjes
2017-09-14 13:34 ` Michal Hocko
2017-09-14 13:34 ` Michal Hocko
2017-09-14 20:07 ` David Rientjes
2017-09-14 20:07 ` David Rientjes
2017-09-13 21:56 ` Roman Gushchin
2017-09-13 21:56 ` Roman Gushchin
2017-09-14 13:40 ` Michal Hocko
2017-09-14 13:40 ` Michal Hocko
2017-09-14 16:05 ` Roman Gushchin
2017-09-14 16:05 ` Roman Gushchin
2017-09-15 10:58 ` Michal Hocko
2017-09-15 10:58 ` Michal Hocko
2017-09-15 15:23 ` Roman Gushchin
2017-09-15 15:23 ` Roman Gushchin
2017-09-15 19:55 ` David Rientjes
2017-09-15 19:55 ` David Rientjes
2017-09-15 21:08 ` Roman Gushchin
2017-09-15 21:08 ` Roman Gushchin
2017-09-18 6:20 ` Michal Hocko
2017-09-18 6:20 ` Michal Hocko
2017-09-18 15:02 ` Roman Gushchin
2017-09-18 15:02 ` Roman Gushchin
2017-09-18 15:02 ` Roman Gushchin
2017-09-21 8:30 ` David Rientjes
2017-09-21 8:30 ` David Rientjes
2017-09-19 20:54 ` David Rientjes
2017-09-19 20:54 ` David Rientjes
2017-09-20 22:24 ` Roman Gushchin
2017-09-20 22:24 ` Roman Gushchin
2017-09-21 8:27 ` David Rientjes
2017-09-21 8:27 ` David Rientjes
2017-09-18 6:16 ` Michal Hocko
2017-09-18 6:16 ` Michal Hocko
2017-09-19 20:51 ` David Rientjes
2017-09-19 20:51 ` David Rientjes
2017-09-18 6:14 ` Michal Hocko
2017-09-18 6:14 ` Michal Hocko
2017-09-20 21:53 ` Roman Gushchin
2017-09-20 21:53 ` Roman Gushchin
2017-09-20 21:53 ` Roman Gushchin
2017-09-25 12:24 ` Michal Hocko
2017-09-25 12:24 ` Michal Hocko
2017-09-25 17:00 ` Johannes Weiner
2017-09-25 17:00 ` Johannes Weiner
2017-09-25 18:15 ` Roman Gushchin
2017-09-25 18:15 ` Roman Gushchin
2017-09-25 20:25 ` Michal Hocko
2017-09-25 20:25 ` Michal Hocko
2017-09-25 20:25 ` Michal Hocko
2017-09-26 10:59 ` Roman Gushchin
2017-09-26 10:59 ` Roman Gushchin
2017-09-26 11:21 ` Michal Hocko
2017-09-26 11:21 ` Michal Hocko
2017-09-26 12:13 ` Roman Gushchin
2017-09-26 12:13 ` Roman Gushchin
2017-09-26 12:13 ` Roman Gushchin
2017-09-26 13:30 ` Michal Hocko
2017-09-26 13:30 ` Michal Hocko
2017-09-26 17:26 ` Johannes Weiner
2017-09-26 17:26 ` Johannes Weiner
2017-09-27 3:37 ` Tim Hockin
2017-09-27 3:37 ` Tim Hockin
2017-09-27 7:43 ` Michal Hocko
2017-09-27 7:43 ` Michal Hocko
2017-09-27 10:19 ` Roman Gushchin
2017-09-27 10:19 ` Roman Gushchin
2017-09-27 10:19 ` Roman Gushchin
2017-09-27 15:35 ` Tim Hockin
2017-09-27 15:35 ` Tim Hockin
2017-09-27 16:23 ` Roman Gushchin
2017-09-27 16:23 ` Roman Gushchin
2017-09-27 18:11 ` Tim Hockin
2017-09-27 18:11 ` Tim Hockin
2017-10-01 23:29 ` Shakeel Butt
2017-10-01 23:29 ` Shakeel Butt
2017-10-02 11:56 ` Tetsuo Handa
2017-10-02 11:56 ` Tetsuo Handa
2017-10-02 12:24 ` Michal Hocko
2017-10-02 12:24 ` Michal Hocko
2017-10-02 12:47 ` Roman Gushchin
2017-10-02 12:47 ` Roman Gushchin
2017-10-02 14:29 ` Michal Hocko
2017-10-02 14:29 ` Michal Hocko
2017-10-02 14:29 ` Michal Hocko
2017-10-02 19:00 ` Shakeel Butt
2017-10-02 19:00 ` Shakeel Butt
2017-10-02 19:28 ` Michal Hocko
2017-10-02 19:28 ` Michal Hocko
2017-10-02 19:45 ` Shakeel Butt
2017-10-02 19:45 ` Shakeel Butt
2017-10-02 19:56 ` Michal Hocko
2017-10-02 19:56 ` Michal Hocko
2017-10-02 20:00 ` Tim Hockin
2017-10-02 20:00 ` Tim Hockin
2017-10-02 20:08 ` Michal Hocko
2017-10-02 20:08 ` Michal Hocko
2017-10-02 20:09 ` Shakeel Butt
2017-10-02 20:20 ` Shakeel Butt
2017-10-02 20:20 ` Shakeel Butt
2017-10-02 20:24 ` Shakeel Butt
2017-10-02 20:24 ` Shakeel Butt
2017-10-02 20:34 ` Johannes Weiner
2017-10-02 20:34 ` Johannes Weiner
2017-10-02 20:55 ` Michal Hocko [this message]
2017-10-02 20:55 ` Michal Hocko
2017-09-25 22:21 ` David Rientjes
2017-09-25 22:21 ` David Rientjes
2017-09-26 8:46 ` Michal Hocko
2017-09-26 8:46 ` Michal Hocko
2017-09-26 21:04 ` David Rientjes
2017-09-26 21:04 ` David Rientjes
2017-09-27 7:37 ` Michal Hocko
2017-09-27 7:37 ` Michal Hocko
2017-09-27 9:57 ` Roman Gushchin
2017-09-27 9:57 ` Roman Gushchin
2017-09-21 14:21 ` Johannes Weiner
2017-09-21 14:21 ` Johannes Weiner
2017-09-21 21:17 ` David Rientjes
2017-09-21 21:17 ` David Rientjes
2017-09-21 21:17 ` David Rientjes
2017-09-21 21:51 ` Johannes Weiner
2017-09-21 21:51 ` Johannes Weiner
2017-09-22 20:53 ` David Rientjes
2017-09-22 20:53 ` David Rientjes
2017-09-22 15:44 ` Tejun Heo
2017-09-22 15:44 ` Tejun Heo
2017-09-22 15:44 ` Tejun Heo
2017-09-22 20:39 ` David Rientjes
2017-09-22 20:39 ` David Rientjes
2017-09-22 20:39 ` David Rientjes
2017-09-22 21:05 ` Tejun Heo
2017-09-22 21:05 ` Tejun Heo
2017-09-23 8:16 ` David Rientjes
2017-09-23 8:16 ` David Rientjes
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