From owner-freebsd-stable@FreeBSD.ORG Wed Aug 10 08:38:37 2011 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B42E81065673 for ; Wed, 10 Aug 2011 08:38:37 +0000 (UTC) (envelope-from Holger.Kipp@alogis.com) Received: from alogis.com (firewall.solit-ag.de [212.184.102.1]) by mx1.freebsd.org (Postfix) with ESMTP id 3D0938FC0A for ; Wed, 10 Aug 2011 08:38:36 +0000 (UTC) Received: from msx3.exchange.alogis.com (msx3exchange.alogis.com [10.1.1.6] (may be forged)) by alogis.com (8.13.4/8.13.1) with ESMTP id p7A8QGqp016144; Wed, 10 Aug 2011 10:26:16 +0200 (CEST) (envelope-from Holger.Kipp@alogis.com) Received: from MSX3.exchange.alogis.com ([fe80::c8ed:428a:a157:b61]) by msx3.exchange.alogis.com ([fe80::c8ed:428a:a157:b61%13]) with mapi id 14.01.0255.000; Wed, 10 Aug 2011 10:27:28 +0200 From: Holger Kipp To: Daniel Kalchev Thread-Topic: 32GB limit per swap device? Thread-Index: AQHMVqDZ7UbCWbbykkWQgMEFR68dspUUf+sAgAELPACAAAm2gIAABfIAgAAEtAA= Date: Wed, 10 Aug 2011 08:27:27 +0000 Message-ID: References: <4E4143A6.6030307@digsys.bg> <20110809151646.GF1814@albert.catwhisker.org> <4E422F8A.1070508@digsys.bg> <20110810074759.GA30254@icarus.home.lan> <4E423CAC.20008@digsys.bg> In-Reply-To: <4E423CAC.20008@digsys.bg> Accept-Language: en-GB, de-DE, en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.1.1.4] Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: FreeBSD-STABLE Mailing List , Jeremy Chadwick Subject: Re: 32GB limit per swap device? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Aug 2011 08:38:37 -0000 Am 10.08.2011 um 10:09 schrieb Daniel Kalchev: > On 10.08.11 10:47, Jeremy Chadwick wrote: >> On Wed, Aug 10, 2011 at 10:13:14AM +0300, Daniel Kalchev wrote: >>> I am more concerned that with 32GB of swap in single device I could not= dump kernel core, with 64GB of RAM. >> My apologies if I've misunderstood something, but why does this of any >> concern? Machine has 64GB RAM. You have a single swap slice that's >> effectively 32GB. How is a kernel panic worth of 64GB RAM going to fit >> into a 32GB swap slice? >> > The swap partitions are 64GB, it is only that FreeBSD refuses to use more= than 32GB of each for swap. But.. it might happily dump core to the whole = partition, tests will show. I doubt it. Have you tried increasing kern.maxswzone? It is the size in KB = (for 32GB it is set to 33554432). kern.maxswzone: Maximum memory for swap metadata Best regards, Holger -- Holger Kipp Diplom-Mathematiker Senior Consultant Tel. : +49 30 436 58 114 Fax. : +49 30 436 58 214 Mobil: +49 178 36 58 114 Email: holger.kipp@alogis.com alogis AG Alt-Moabit 90b D-10559 Berlin web : http://www.alogis.com ---------------------------------------------------------- alogis AG Sitz/Registergericht: Berlin/AG Charlottenburg, HRB 71484 Vorstand: Arne Friedrichs, Joern Samuelson Aufsichtsratsvorsitzender: Reinhard Mielke