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Date:      Thu, 28 Oct 1999 23:41:14 -0400 (EDT)
From:      John Baldwin <jobaldwi@vt.edu>
To:        Mike Smith <mike@smith.net.au>
Cc:        hackers@FreeBSD.ORG, Julian Elischer <julian@whistle.com>, Matthew Dillon <dillon@apollo.backplane.com>, Michael Beckmann <petzi@apfel.de>
Subject:   Re: Limitations in FreeBSD
Message-ID:  <199910290341.XAA00720@server.baldwin.cx>
In-Reply-To: <199910282253.PAA02302@dingo.cdrom.com>

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On 28-Oct-99 Mike Smith wrote:
> 
>> That´s why I´m looking for a way of having large mmap´able 
>> files. Are you saying that ALL Intel CPUs, including PIII, can only 
>> address 4 GB? 
> 
> That's correct; it's why the ia32 architecture has a '32' in its
> name.

Note quite.  With PAE (Page Address Extensions available on PPro's and
some later chips) you can get an extra 4 bits, for a total of 36 bits
of addressable space, or 64 Gig.  That still won't help out very much,
however, for this problem.

---

John Baldwin <jobaldwi@vt.edu> -- http://www.cslab.vt.edu/~jobaldwi/
PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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