Date: Mon, 13 Nov 2006 16:23:22 -0500 From: Kris Kennaway <kris@obsecurity.org> To: "Reuben A. Popp" <rapopp@eastcentral.edu> Cc: freebsd-questions@freebsd.org Subject: Re: Maximum amount of ram? Message-ID: <20061113212322.GA53818@xor.obsecurity.org> In-Reply-To: <200611131514.29522.rapopp@eastcentral.edu> References: <200611131514.29522.rapopp@eastcentral.edu>
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--EeQfGwPcQSOJBaQU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Nov 13, 2006 at 04:14:28PM -0500, Reuben A. Popp wrote: > Good afternoon everyone, >=20 > Can someone please tell me what is the maximum amount of physical ram tha= t the=20 > i386 branch of fbsd can handle? We're looking at purchasing a really bee= fy=20 > machine here and I would like to make sure that it can utilize the amount= of=20 > ram that will be installed. The i386 architecture is incapable of addressing more than 4GB at once (since it's fundamentally 32-bit). So you have to use a hack called PAE to allow the kernel to juggle between 4GB subsets of a larger amount of RAM (up to 64GB on FreeBSD). See the handbook for documentation of PAE and its limitations. If you really need to make efficient use of such a large amount of RAM, consider purchasing an amd64-compatible system instead. Kris --EeQfGwPcQSOJBaQU Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFWOJKWry0BWjoQKURAgDEAKDsgJxv+mCSXQjT2ZJR2tVCjrKSdgCdGM33 e29x7+yRnSpZWtP+uydrsL8= =XQtr -----END PGP SIGNATURE----- --EeQfGwPcQSOJBaQU--
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