From owner-freebsd-questions@FreeBSD.ORG Tue May 3 21:21:06 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3CAD316A4CE for ; Tue, 3 May 2005 21:21:06 +0000 (GMT) Received: from obsecurity.dyndns.org (CPE0050040655c8-CM00111ae02aac.cpe.net.cable.rogers.com [69.194.102.111]) by mx1.FreeBSD.org (Postfix) with ESMTP id 734FB43D64 for ; Tue, 3 May 2005 21:21:05 +0000 (GMT) (envelope-from kris@obsecurity.org) Received: by obsecurity.dyndns.org (Postfix, from userid 1000) id 317FE5133E; Tue, 3 May 2005 14:20:59 -0700 (PDT) Date: Tue, 3 May 2005 14:20:59 -0700 From: Kris Kennaway To: "Chad Leigh -- Shire.Net LLC" Message-ID: <20050503212059.GA23694@xor.obsecurity.org> References: <000601c5500e$85b4f3c0$0a01a8c0@ops.cenergynetworks.com> <20050503204542.GB10776@xor.obsecurity.org> <20050503210743.GA11371@xor.obsecurity.org> <2491CCFD-B6DD-4A29-8023-9E46891DC7A2@shire.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="5vNYLRcllDrimb99" Content-Disposition: inline In-Reply-To: <2491CCFD-B6DD-4A29-8023-9E46891DC7A2@shire.net> User-Agent: Mutt/1.4.2.1i cc: FreeBSD Mailing List cc: Kris Kennaway Subject: Re: swap space X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 03 May 2005 21:21:06 -0000 --5vNYLRcllDrimb99 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 03, 2005 at 03:15:54PM -0600, Chad Leigh -- Shire.Net LLC wrote: >=20 > On May 3, 2005, at 3:07 PM, Kris Kennaway wrote: >=20 > >On Tue, May 03, 2005 at 03:02:11PM -0600, Chad Leigh -- Shire.Net =20 > >LLC wrote: > > > >> > >>On May 3, 2005, at 2:45 PM, Kris Kennaway wrote: > >> > >>>Since it's a pain to add swap later you want to make > >>>allowances for future expansion (e.g. you'd need 32GB of swap if you > >>>ever plan to add 32GB of RAM). > >>> > >> > >>I understand that people recommend as much swap as you have ram or > >>more. However, is this required and why? I have a dual opteron > >>system running i386 5.3-release (with released patches) and it has > >>4GB RAM and only 2GB of swap, which is hardly ever touched, and when > >>it is, just in small amounts. > >> > >>Why is this a problem? (If it ever needs the 2gb of swap I am in > >>trouble as the load at that time would be sky high and the machine > >>not really responsive anyway) > >> > > > >I explained in my email..you need it to dump the kernel. > > >=20 > Thanks! >=20 > Well, on my production system, I am not dumping any kernels. Once It =20 > crashes, I reboot it and go back into production. Anything dumped =20 > would get wiped out. Luckily I am pretty conservative and only move =20 > to new versions of the OS when they have been released a while and so =20 > my machines have not had panics in years. It's up to you, of course, but it's been my experience that you might regret the small expenditure of a few gigabytes one day when you do run into a panic you need help to solve... Kris --5vNYLRcllDrimb99 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCd+s6Wry0BWjoQKURAhpNAJoDtJHWmJltmzmA0hVxG/MfYWTGXQCeJ0oi P4YU3+Wy5joMeTBUamlJlHQ= =cXAY -----END PGP SIGNATURE----- --5vNYLRcllDrimb99--