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Date:      Thu, 16 Aug 2018 09:59:12 +0000
From:      Alexey Dokuchaev <danfe@FreeBSD.org>
To:        Mark Johnston <markj@freebsd.org>
Cc:        Kevin Lo <kevlo@freebsd.org>, Lev Serebryakov <lev@freebsd.org>, gljennjohn@gmail.com, FreeBSD current <freebsd-current@freebsd.org>
Subject:   Re: swapping is completely broken in -CURRENT r334649?
Message-ID:  <20180816095912.GA80650@FreeBSD.org>
In-Reply-To: <20180627115526.GA52468@pesky>
References:  <d3ee2b8f-bdbe-ce25-f496-6267f9bb0212@FreeBSD.org> <20180605181716.73b8ea91@ernst.home> <2925b27f-43cf-8813-eaa7-4f3d12bef8f0@FreeBSD.org> <20180605214808.GA94301@pesky> <20180615051025.GA79327@ns.kevlo.org> <20180615084022.GA32922@pesky.lan> <20180627104638.GA15311@FreeBSD.org> <20180627115526.GA52468@pesky>

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On Wed, Jun 27, 2018 at 07:55:26AM -0400, Mark Johnston wrote:
> On Wed, Jun 27, 2018 at 10:46:38AM +0000, Alexey Dokuchaev wrote:
> > On Fri, Jun 15, 2018 at 04:40:22AM -0400, Mark Johnston wrote:
> > > ...
> > > The change was committed as r334752.  Are you seeing unexpected OOM
> > > kills on or after that revision?
> > 
> > I've just discovered this thread.  I've updated my -CURRENT desktop ca.
> > June 4th and my X.org session crashes within several minutes.  This is
> > on i386 system with 4G RAM.
> > 
> > I cannot get SVN revision of that kernel because something got broken
> > and it was not embedded in the image. :-(
> > 
> > Rebooting with kernel="kernel.old" from May 12th made this problem go
> > away.  Is the root cause is known at this time?  Which revision shall
> > I try to see whether it does not exhibit this bug any longer?  Thanks,
> 
> As noted earlier in the thread, r329882 introduced a problem where
> out-of-memory kills were taking place despite an abundance of free pages
> and swap space.  That bug was fixed in r334752.  If you are seeing a
> problem that is fixed in a kernel from May 12th, then it is possibly
> unrelated to this bug, but it is worth testing r334752 or later to
> confirm.

Thanks, I can confirm that r334752 fixed the out-of-memory kills for me
now that I've been running it for two weeks without a single problem.

./danfe



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