Date: Wed, 15 Aug 2018 10:20:15 +1000 From: Trev <freebsd-arm@sentry.org> To: freebsd-arm@freebsd.org Subject: Re: RPI3 swap experiments (grace under pressure) Message-ID: <2f3bed05-b27e-420b-e831-1c8286edf35e@sentry.org> In-Reply-To: <bc2b4aa9-5284-502b-1745-aa531c12c5b8@m5p.com> References: <20180812173248.GA81324@phouka1.phouka.net> <20180812224021.GA46372@www.zefox.net> <B81E53A9-459E-4489-883B-24175B87D049@yahoo.com> <20180813021226.GA46750@www.zefox.net> <0D8B9A29-DD95-4FA3-8F7D-4B85A3BB54D7@yahoo.com> <FC0798A1-C805-4096-9EB1-15E3F854F729@yahoo.com> <20180813185350.GA47132@www.zefox.net> <FA3B8541-73E0-4796-B2AB-D55CE40B9654@yahoo.com> <20180814014226.GA50013@www.zefox.net> <02fe39af-a02c-fb6a-70b0-da3b7fd06c22@goodgas.com.au> <20180814213107.GA51051@www.zefox.net> <D04BB7AF-503F-4779-B31B-AEF2A15EA7C6@jeditekunum.com> <bc2b4aa9-5284-502b-1745-aa531c12c5b8@m5p.com>
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George Mitchell wrote on 15/08/2018 08:33: > On 08/14/18 18:17, Jedi Tek'Unum wrote: >> I firmly disagree with the entire concept of out of memory killers. Th= ey are simply evil and in my opinion a complete cop-out. I first encounte= red this kind of kludge back in the =E2=80=9880s with AIX. It was bad the= n and it still is today. Frankly I find it ridiculous that they still exi= st. >> [...] >=20 > However: consider the subject (Raspberry Pi). -- George When researching whether 512M of RAM was considered "usable" for a=20 FreeBSD buildworld, I came across [https://reviews.freebsd.org/D8302]=20 from October 2016 where just 256M was considered a test case for i386=20 and amd64 (-j1 I'm assuming) buildworlds which should succeed. Regardless, my RPi3B+ OOMA issues were completely eliminated by=20 replacing the 16G SanDisk "Ultra" card with a "faster" 32G SanDisk=20 "Extreme" card which contains all file systems as well as a swap=20 partition and runs -j4 buildworld flawlessly. I think this lends some=20 support to Warner's view.
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