From owner-svn-src-all@freebsd.org Mon Dec 11 16:21:25 2017 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8A12EE96C7F; Mon, 11 Dec 2017 16:21:25 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 066F76CF69; Mon, 11 Dec 2017 16:21:24 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221] (may be forged)) by hz.grosbein.net (8.15.2/8.15.2) with ESMTPS id vBBGLIvF007123 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 11 Dec 2017 17:21:19 +0100 (CET) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: kostikbel@gmail.com Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id vBBGLCFv027739 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Mon, 11 Dec 2017 23:21:12 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: svn commit: r326758 - in head/sys/i386: conf include To: Konstantin Belousov References: <201712110432.vBB4WbnE021090@repo.freebsd.org> <20171211091943.GF2272@kib.kiev.ua> <5A2E5D44.9030904@grosbein.net> <20171211105242.GH2272@kib.kiev.ua> <5A2E6608.5090205@grosbein.net> <20171211150827.GJ2272@kib.kiev.ua> Cc: Conrad Meyer , src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org From: Eugene Grosbein Message-ID: <5A2EB072.6050803@grosbein.net> Date: Mon, 11 Dec 2017 23:21:06 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <20171211150827.GJ2272@kib.kiev.ua> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=2.2 required=5.0 tests=BAYES_00, LOCAL_FROM, RDNS_NONE autolearn=no autolearn_force=no version=3.4.1 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains * 1.9 RDNS_NONE Delivered to internal network by a host with no rDNS X-Spam-Level: ** X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on hz.grosbein.net X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Dec 2017 16:21:25 -0000 11.12.2017 22:08, Konstantin Belousov пишет: > On Mon, Dec 11, 2017 at 06:03:36PM +0700, Eugene Grosbein wrote: >> I do not try to contradict other usage patterns. In fact, I'm eager to know >> a practical example of such pattern: a task, an application, anything real? > Plain workstation use, like X11+browser+editor+some other programs easily > allocates 1000+ threads. It was still possible to use 32bit x86 for that, > of course in max memory config without PAE, and without ZFS. Add some > load that involves network, for instance torrent client, to establish the > pressure on KVA. > > I am almost sure that users would get troubles now. Understood. While I'm sure that modern internet browsers make it unconfortable to browse with less than 4G total RAM (e.g. 2GB) available for the system thus requiring amd64, I can imagine some old hardware without 64bit-enabled CPU used as workstation. We should add Release Notes and UPDATING entry for such i386 users about setting "kern.kstack_pages=2" back in /boot/loader.conf (or 3?) and warn them against combined usage of ZFS/SCTP/IPSEC until these subsystems get fixed to not abuse kernel stack.