From owner-freebsd-questions@FreeBSD.ORG Wed Apr 25 08:02:50 2007 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 4021916A406 for ; Wed, 25 Apr 2007 08:02:50 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id A346913C4B8 for ; Wed, 25 Apr 2007 08:02:49 +0000 (UTC) (envelope-from freebsd-questions@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HgcSX-0006Ha-Fu for freebsd-questions@freebsd.org; Wed, 25 Apr 2007 10:02:41 +0200 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 25 Apr 2007 10:02:41 +0200 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 25 Apr 2007 10:02:41 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-questions@freebsd.org From: Ivan Voras Date: Wed, 25 Apr 2007 10:02:24 +0200 Lines: 40 Message-ID: References: <01d301c78699$d6a36820$0300020a@mickey> <20070424140528.95287ff4.wmoran@potentialtech.com> <021201c7869f$ee90fd70$0300020a@mickey> <3ee9ca710704241144n4ab349c6m901586e427b1ae0d@mail.gmail.com> <021c01c786a0$fe7e5510$0300020a@mickey> <20070424145433.734761db.wmoran@potentialtech.com> <20070424182027.33d16b28.wmoran@potentialtech.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig412AFAC0DC1F9955F58D491F" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 1.5.0.10 (X11/20060911) In-Reply-To: <20070424182027.33d16b28.wmoran@potentialtech.com> X-Enigmail-Version: 0.94.2.0 Sender: news Subject: Re: Memory >3.5GB not used? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Apr 2007 08:02:50 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig412AFAC0DC1F9955F58D491F Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Bill Moran wrote: > Does this test demonstrate usage of memory over 4G? It's my=20 understanding > that PAE starts to suffer when it has to look at the memory over 4G=20 (which > is the problem it's intended to solve) > > If your entire test fits in under 4G, you're not seeing the worst of i= t. > At least, that's my understanding of the issue. I don't think that's how PAE works. AFAIK, it adds all the memory pages=20 it can find (including those above and below 4 GB) into the VM pool with = 64-bit addresses, so all of them can be used by the applications in an=20 uniform way. Kind of like swap works. --------------enig412AFAC0DC1F9955F58D491F Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFGLwsQldnAQVacBcgRAkHCAJwPhfKrew9dwxhRR5mboQg7WZ+FhQCbB8Cf 9JW7h7kdnBDCBkVwqmYeJpg= =ZWJk -----END PGP SIGNATURE----- --------------enig412AFAC0DC1F9955F58D491F--