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From: Michal Hocko <mhocko@kernel.org>
To: Rik van Riel <riel@surriel.com>
Cc: Suren Baghdasaryan <surenb@google.com>,
	akpm@linux-foundation.org, dancol@google.com, jannh@google.com,
	minchan@kernel.org, penguin-kernel@I-love.SAKURA.ne.jp,
	kernel-team@android.com, rientjes@google.com,
	linux-kernel@vger.kernel.org, willy@infradead.org,
	linux-mm@kvack.org, hannes@cmpxchg.org, shakeelb@google.com,
	jrdr.linux@gmail.com, yuzhoujian@didichuxing.com,
	joel@joelfernandes.org, timmurray@google.com,
	lsf-pc@lists.linux-foundation.org, guro@fb.com,
	christian@brauner.io, ebiederm@xmission.com
Subject: Re: [Lsf-pc] [RFC 0/2] opportunistic memory reclaim of a killed process
Date: Thu, 11 Apr 2019 14:16:33 +0200	[thread overview]
Message-ID: <20190411121633.GV10383@dhcp22.suse.cz> (raw)
In-Reply-To: <e1fc2c84f5ef2e1408f6fee7228a52a458990b31.camel@surriel.com>

On Thu 11-04-19 07:51:21, Rik van Riel wrote:
> On Wed, 2019-04-10 at 18:43 -0700, Suren Baghdasaryan via Lsf-pc wrote:
> > The time to kill a process and free its memory can be critical when
> > the
> > killing was done to prevent memory shortages affecting system
> > responsiveness.
> 
> The OOM killer is fickle, and often takes a fairly
> long time to trigger. Speeding up what happens after
> that seems like the wrong thing to optimize.
> 
> Have you considered using something like oomd to
> proactively kill tasks when memory gets low, so
> you do not have to wait for an OOM kill?

AFAIU, this is the point here. They probably have a user space OOM
killer implementation and want to achieve killing to be as swift as
possible.

-- 
Michal Hocko
SUSE Labs

  reply	other threads:[~2019-04-11 12:16 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-11  1:43 [RFC 0/2] opportunistic memory reclaim of a killed process Suren Baghdasaryan
2019-04-11  1:43 ` [RFC 1/2] mm: oom: expose expedite_reclaim to use oom_reaper outside of oom_kill.c Suren Baghdasaryan
2019-04-25 21:12   ` Tetsuo Handa
2019-04-25 21:56     ` Suren Baghdasaryan
2019-04-11  1:43 ` [RFC 2/2] signal: extend pidfd_send_signal() to allow expedited process killing Suren Baghdasaryan
2019-04-11 10:30   ` Christian Brauner
2019-04-11 10:34     ` Christian Brauner
2019-04-11 15:18     ` Suren Baghdasaryan
2019-04-11 15:23       ` Suren Baghdasaryan
2019-04-11 16:25         ` Daniel Colascione
2019-04-11 15:33   ` Matthew Wilcox
2019-04-11 17:05     ` Johannes Weiner
2019-04-11 17:09     ` Suren Baghdasaryan
2019-04-11 17:33       ` Daniel Colascione
2019-04-11 17:36         ` Matthew Wilcox
2019-04-11 17:47           ` Daniel Colascione
2019-04-12  6:49             ` Michal Hocko
2019-04-12 14:15               ` Suren Baghdasaryan
2019-04-12 14:20                 ` Daniel Colascione
2019-04-12 21:03             ` Matthew Wilcox
2019-04-11 17:52           ` Suren Baghdasaryan
2019-04-11 21:45       ` Roman Gushchin
2019-04-11 21:59         ` Suren Baghdasaryan
2019-04-12  6:53     ` Michal Hocko
2019-04-12 14:10       ` Suren Baghdasaryan
2019-04-12 14:14       ` Daniel Colascione
2019-04-12 15:30         ` Daniel Colascione
2019-04-25 16:09         ` Suren Baghdasaryan
2019-04-11 10:51 ` [RFC 0/2] opportunistic memory reclaim of a killed process Michal Hocko
2019-04-11 16:18   ` Joel Fernandes
2019-04-11 18:12     ` Michal Hocko
2019-04-11 19:14       ` Joel Fernandes
2019-04-11 20:11         ` Michal Hocko
2019-04-11 21:11           ` Joel Fernandes
2019-04-11 16:20   ` Sandeep Patil
2019-04-11 16:47   ` Suren Baghdasaryan
2019-04-11 18:19     ` Michal Hocko
2019-04-11 19:56       ` Suren Baghdasaryan
2019-04-11 20:17         ` Michal Hocko
2019-04-11 17:19   ` Johannes Weiner
2019-04-11 11:51 ` [Lsf-pc] " Rik van Riel
2019-04-11 12:16   ` Michal Hocko [this message]
2019-04-11 16:54     ` Suren Baghdasaryan

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