From owner-freebsd-hackers@FreeBSD.ORG Sun Oct 12 05:01:53 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7E58C16A4B3 for ; Sun, 12 Oct 2003 05:01:53 -0700 (PDT) Received: from mail.broadpark.no (mail.broadpark.no [217.13.4.2]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8CDD643FAF for ; Sun, 12 Oct 2003 05:01:52 -0700 (PDT) (envelope-from des@des.no) Received: from smtp.des.no (37.80-203-228.nextgentel.com [80.203.228.37]) by mail.broadpark.no (Postfix) with ESMTP id BF742785A1 for ; Sun, 12 Oct 2003 14:01:51 +0200 (MEST) Received: by smtp.des.no (Pony Express, from userid 666) id 8BDB69C2BF; Sun, 12 Oct 2003 14:01:51 +0200 (CEST) Received: from dwp.des.no (dwp.des.no [10.0.0.4]) by smtp.des.no (Pony Express) with ESMTP id CFB299C0B9 for ; Sun, 12 Oct 2003 14:01:47 +0200 (CEST) Received: by dwp.des.no (Postfix, from userid 2602) id C8ED1B823; Sun, 12 Oct 2003 14:01:47 +0200 (CEST) To: hackers@freebsd.org From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=) Date: Sun, 12 Oct 2003 14:01:47 +0200 Message-ID: User-Agent: Gnus/5.090024 (Oort Gnus v0.24) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on dsa.des.no X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 Subject: real vs. avail memory X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 12 Oct 2003 12:01:53 -0000 I've gotten used to the fact that there is a small discrepancy between real and available memory, but I was surprised to see the following in dmesg on a new P4 system: real memory =3D 1073676288 (1023 MB) avail memory =3D 1037799424 (989 MB) That's a full 40 MB difference... where does that memory go? is it used for page maps or something like that? DES --=20 Dag-Erling Sm=F8rgrav - des@des.no