From owner-freebsd-arm@freebsd.org Wed Aug 15 14:50:16 2018 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id E9E1B10586A7 for ; Wed, 15 Aug 2018 14:50:15 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic314-13.consmr.mail.bf2.yahoo.com (sonic314-13.consmr.mail.bf2.yahoo.com [74.6.132.123]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 8D84A9079E for ; Wed, 15 Aug 2018 14:50:15 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-YMail-OSG: XbjPdd0VM1kT7tinzy9m8DMUiWoxqRlfPlMWW9rFBGaP5XuXEMyMFqAdJCWrizF ZpjzU3l8WMsu.R.6Y69Z6bmRURQCrQgnP__ueh.53qDGuwZiYb2n3V3MQuxdNv7nZpB.PRtV89OY YBh.vYB2xoaCL7N5kIsE9A3aKxdCByQ0WboZKClnlOKNOahK1vKnPOGmIh90WIdXCGZRmUfHnByN JEeOBvKVIWtslKFd5DKrLNCCtADUhn_f_swUMk1pq9Ydw9wC7rEQT_IKHuoPClf6WrZwgWOpwQdN CBoxGONwsYzlwgE6VVYf66FkEHzNcLSqjGpK8q8KwpTy7FO46L34bwY55t8m.5q_rz8MN41.EBly me47opMhDTjwV1IMPceQsIg_JtFlRzXZiSDfoPrSwJGIW_f.ILl_RRnZVIoSj9dzzrDVrrHTzAtU oGaoijC9fJtko0xBaN1N78yuFnaQskXg.hj4Z_lyxlfCmY.slgdtKhlgzOlTdEHh8ShKOyyiat4M P5R.Q0y0iOh0Kh_45cRznnVt1Go7JwMMu7IBb03uGur_Zk0tabJS8b79GVYSS6hMPn7yEY9oreBS TfYL7QXeQLuNIxs6KNsnYC3IqHl6D3O3AvSxYdmagREQgU175xDKXkO1z0c7ZdemMvXXQtAeMINq ZefFPaEH04KO2zzj8e.zcgS1Lg052MvMGt2RHRWEOWxglCNL3ioI3ZaaHa56voQnR7esiIIBgJcY kv.s4o1oZIuhWQlNoWHnnx7gkSDMDo80ZHWKpCDASMCCnZX.wQ_R712fb.Ycr2cZRLXv.rkaGz7x P0wqEq4GN48I5bcaf_78OEQvu7qBAHKi5NVpR6AP1vy9mUJn0KmViZj2FSb5erbwUX1W_2Gb27ZV e9dQsZ9LnclRwbEdl73AZoc8wbsbTPab9OVyOLMg.de2WaQ4iO6QzuxOH4xko99RaQtOVS6dPRoN AUGMooAAee650yWU4D6a0OIZv4vNYWGeTDdxyrGjkR0143VpMeQJ8duFKZTK0Q93DV80YRyELY3_ uK8M4x0y6FA-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic314.consmr.mail.bf2.yahoo.com with HTTP; Wed, 15 Aug 2018 14:50:09 +0000 Received: from ip70-189-131-151.lv.lv.cox.net (EHLO [192.168.0.105]) ([70.189.131.151]) by smtp414.mail.bf1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID de3df9046f936a108a33036fd93527c9; Wed, 15 Aug 2018 14:40:00 +0000 (UTC) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) Subject: Re: RPI3 swap experiments (grace under pressure) From: Mark Millard In-Reply-To: <2f3bed05-b27e-420b-e831-1c8286edf35e@sentry.org> Date: Wed, 15 Aug 2018 07:39:58 -0700 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <16004AB0-B499-4F30-8C14-AAE5E45B0A3B@yahoo.com> References: <20180812173248.GA81324@phouka1.phouka.net> <20180812224021.GA46372@www.zefox.net> <20180813021226.GA46750@www.zefox.net> <0D8B9A29-DD95-4FA3-8F7D-4B85A3BB54D7@yahoo.com> <20180813185350.GA47132@www.zefox.net> <20180814014226.GA50013@www.zefox.net> <02fe39af-a02c-fb6a-70b0-da3b7fd06c22@goodgas.com.au> <20180814213107.GA51051@www.zefox.net> <2f3bed05-b27e-420b-e831-1c8286edf35e@sentry.org> To: Trev X-Mailer: Apple Mail (2.3445.9.1) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 15 Aug 2018 14:50:16 -0000 On 2018-Aug-14, at 5:20 PM, Trev wrote: > 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. = They are simply evil and in my opinion a complete cop-out. I first = encountered this kind of kludge back in the =E2=80=9880s with AIX. It = was bad then and it still is today. Frankly I find it ridiculous that = they still exist. >>> [...] >> However: consider the subject (Raspberry Pi). -- George >=20 > When researching whether 512M of RAM was considered "usable" for a = FreeBSD buildworld, I came across [https://reviews.freebsd.org/D8302] = from October 2016 where just 256M was considered a test case for i386 = and amd64 (-j1 I'm assuming) buildworlds which should succeed. What I see there is pho writing: QUOTE I have run stress2 testes on i386 and amd64. I ran a buildkernel on both i386 and amd64 with 256MB RAM / UP. Buildworld was run with various small RAM configurations. END QUOTE It explicitly lists buildkernel for 256 MiBytes of RAM, not buildworld. I'm not sure what the "UP" is for. "RAM / UP" looks like it might be a ratio but may be it was indicating not SMP? It not clear if this buildkernel testing included kernel-toolchain as well. buildworld was listed separately with nothing explicit about what "small RAM" was considered to be. If stress2 is configurable, there is no information on what the specific test was for retrying the same test or knowing just what the test was. > Regardless, my RPi3B+ OOMA issues were completely eliminated by = replacing the 16G SanDisk "Ultra" card with a "faster" 32G SanDisk = "Extreme" card which contains all file systems as well as a swap = partition and runs -j4 buildworld flawlessly. I think this lends some = support to Warner's view. _______________________________________________ freebsd-arm@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-arm To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org" =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)