From: Pavel Machek <pavel@ucw.cz>
To: Michal Hocko <mhocko@kernel.org>
Cc: kernel list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>,
linux-mm@kvack.org, akpm@linux-foundation.org
Subject: Re: OOM killer not nearly agressive enough?
Date: Thu, 9 Jan 2020 22:03:07 +0100 [thread overview]
Message-ID: <20200109210307.GA1553@duo.ucw.cz> (raw)
In-Reply-To: <20200109115633.GR4951@dhcp22.suse.cz>
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On Thu 2020-01-09 12:56:33, Michal Hocko wrote:
> On Tue 07-01-20 21:44:12, Pavel Machek wrote:
> > Hi!
> >
> > I updated my userspace to x86-64, and now chromium likes to eat all
> > the memory and bring the system to standstill.
> >
> > Unfortunately, OOM killer does not react:
> >
> > I'm now running "ps aux", and it prints one line every 20 seconds or
> > more. Do we agree that is "unusable" system? I attempted to do kill
> > from other session.
>
> Does sysrq+f help?
May try that next time.
> > Do we agree that OOM killer should have reacted way sooner?
>
> This is impossible to answer without knowing what was going on at the
> time. Was the system threshing over page cache/swap? In other words, is
> the system completely out of memory or refaulting the working set all
> the time because it doesn't fit into memory?
Swap was full, so "completely out of memory", I guess. Chromium does
that fairly often :-(.
> > Is there something I can tweak to make it behave more reasonably?
>
> PSI based early OOM killing might help. See https://github.com/facebookincubator/oomd
Um. Before doing that... is there some knob somewhere saying "hey
oomkiller, one hour to recover machine is a bit too much, can you
please react sooner"? PSI is completely different system, but I guess
I should attempt to tweak the existing one first...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2020-01-09 21:03 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 20:44 OOM killer not nearly agressive enough? Pavel Machek
2020-01-09 11:56 ` Michal Hocko
2020-01-09 21:03 ` Pavel Machek [this message]
2020-01-09 21:25 ` Michal Hocko
2020-01-09 22:48 ` Pavel Machek
2020-01-10 1:24 ` Shakeel Butt
2020-01-10 1:24 ` Shakeel Butt
2020-01-10 6:31 ` Michal Hocko
2020-01-09 21:46 ` Vito Caputo
2020-01-09 21:58 ` Michal Hocko
2020-01-09 21:05 ` Pavel Machek
2020-01-09 21:28 ` Michal Hocko
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