From owner-freebsd-hackers Thu Oct 28 20:26:27 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from paradox.nexuslabs.com (cc718001-a.vron1.nj.home.com [24.11.70.21]) by hub.freebsd.org (Postfix) with ESMTP id 730DB14E95 for ; Thu, 28 Oct 1999 20:26:20 -0700 (PDT) (envelope-from cyouse@paradox.nexuslabs.com) Received: from localhost (cyouse@localhost) by paradox.nexuslabs.com (8.9.3/8.9.3) with ESMTP id XAA04715; Thu, 28 Oct 1999 23:24:21 -0400 (EDT) (envelope-from cyouse@paradox.nexuslabs.com) Date: Thu, 28 Oct 1999 23:24:20 -0400 (EDT) From: Chuck Youse To: Mike Smith Cc: Michael Beckmann , Matthew Dillon , Julian Elischer , hackers@FreeBSD.ORG Subject: Re: Limitations in FreeBSD In-Reply-To: <199910282253.PAA02302@dingo.cdrom.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=X-UNKNOWN Content-Transfer-Encoding: QUOTED-PRINTABLE Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > That=B4s why I=B4m looking for a way of having large mmap=B4able=20 > > files. Are you saying that ALL Intel CPUs, including PIII, can only=20 > > address 4 GB?=20 >=20 > That's correct; it's why the ia32 architecture has a '32' in its name. I don't believe that's true. I don't have any hard evidence within easy reach, but with the introduction of the Pentium, the address space was increased. A user process, of course, can only have 4G of addressible space (32-bit addresses) but the OS can map pages of the 4G space into a larger area. Something to do with 4MB pages instead of 4K pages. =20 Again, I could be wrong on this one. Chuck Youse To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message