From owner-cvs-all Sat Jun 23 19:28:44 2001 Delivered-To: cvs-all@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id 5418937B405; Sat, 23 Jun 2001 19:28:37 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.3/8.11.2) with ESMTP id f5O2SPI96014; Sat, 23 Jun 2001 19:28:25 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20010623214226.H67164-100000@scribble.fsn.hu> Date: Sat, 23 Jun 2001 22:44:52 -0700 (PDT) From: John Baldwin To: Attila Nagy Subject: Re: cvs commit: src/sys/i386/i386 machdep.c Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 23-Jun-01 Attila Nagy wrote: > Hello, > >> > Hmm- can you have more than 4GB of memory on an i386? >> Yes, you can have up to 64gb on PPro's or later (at least, the CPU's >> support a 36-bit physical address space) but we don't currently >> support the extensions so we can't use more than 4 anyways. > Do you plan to support this feature in the future (for example in 5.0)? It's not easy. > I think it's not too easy and not an obvious task, but maybe it's worth > the extra work (people using big DBs on x86?)... Actually, it doesn't really help as much as it would seem, because the virtual address space of each process is still limited to 4gb, so it doesn't let you run larger processes, it just lets you fit more of them into memory. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message