Date: Mon, 26 Nov 2001 13:05:15 -0800 From: Kris Kennaway <kris@obsecurity.org> To: Anthony Atkielski <anthony@freebie.atkielski.com> Cc: FreeBSD Questions <freebsd-questions@FreeBSD.ORG> Subject: Re: Calculating swap file size Message-ID: <20011126130515.D17576@xor.obsecurity.org> In-Reply-To: <00e201c1769b$a36bbd40$0a00000a@atkielski.com>; from anthony@freebie.atkielski.com on Mon, Nov 26, 2001 at 05:58:53PM %2B0100 References: <00e201c1769b$a36bbd40$0a00000a@atkielski.com>
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--jCrbxBqMcLqd4mOl Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Nov 26, 2001 at 05:58:53PM +0100, Anthony Atkielski wrote: > Since memory isn't very expensive these days, I'm thinking of adding more RAM to > my FreeBSD machine; it has 256 MB, but I was thinking of going to 1 GB, which is > the capacity of this machine. Currently, I have a 800 MB swap partition (or is > it a slice?--I know it's not a filesystem) defined. Is this enough for 1 GB of > RAM? Is there any kind of strong correlation between RAM size and swap file > size that I have to be concerned about? Does FreeBSD resort to swap only when > RAM is exhausted, or does it have to use the swap file all the time (as in a > one-to-one VM mapping scheme)? If the swap file is of less than optimal size, > what happens? The main factor when using machines with a lot of RAM is that you need to have a swap partition at least as large as your RAM size in order to obtain kernel panic dumps when things do wrong. If you can't obtain a panic dump, it's probably going to be impossible for a developer to track down any weird kernel problems you run into at some point down the line. Kris --jCrbxBqMcLqd4mOl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE8Aq6KWry0BWjoQKURAoQqAJ4oHRQ4qI9bBoYS/0ZbYaW6vKO0dgCgyRWD u5xHEHH9HDtQ100OF4g27uc= =CB5K -----END PGP SIGNATURE----- --jCrbxBqMcLqd4mOl-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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