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Date: Thu, 12 Nov 2015 20:09:54 +0200
From: Konstantin Belousov <kostikbel@gmail.com>
To: Michael Tuexen <tuexen@freebsd.org>
Cc: freebsd-arm <freebsd-arm@freebsd.org>
Subject: Re: Memory management issue on RPi?
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On Thu, Nov 12, 2015 at 06:57:03PM +0100, Michael Tuexen wrote:
> > On 12 Nov 2015, at 18:12, Konstantin Belousov <kostikbel@gmail.com> wrote:
> > 
> > On Thu, Nov 12, 2015 at 05:25:37PM +0100, Michael Tuexen wrote:
> >>> On 12 Nov 2015, at 13:18, Konstantin Belousov <kostikbel@gmail.com> wrote:
> >>> This is a known problem with the swap-less OOM.  The following patch
> >>> should give you an immediate relief.  You might want to tweak
> >>> sysctl vm.pageout_oom_seq if default value is not right, it was selected
> >>> by 'try and see' approach on very small (32 or 64MB) i386 VM.
> >> It just works... Will do some more testing...
> > 
> > I am more interested in report if OOM was triggered when it should.
> How do I know? What output do you want to see?
> 
> Best regards
> Michael
> > 
> > Try running several instances of 'sort /dev/zero'.
^^^^^^^^^^^^^ I already answered this.
Run sort /dev/zero, and see whether OOM fires.