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Date:      Sat, 4 Aug 2001 02:38:23 -0300 (BRST)
From:      Rik van Riel <riel@conectiva.com.br>
To:        Terry Lambert <tlambert2@mindspring.com>
Cc:        Julian Elischer <julian@elischer.org>, craig <craiglei@pasia.com.cn>, <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: How to visit physical memory above 4G?
Message-ID:  <Pine.LNX.4.33L.0108040235500.2526-100000@imladris.rielhome.conectiva>
In-Reply-To: <3B6B86F0.EAAA016@mindspring.com>

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On Fri, 3 Aug 2001, Terry Lambert wrote:

> This is a trivial implementation.  I'm not very impressed.

> Personally, I'm not interested in a huge user space,

Maybe not you, but I bet the database and scientific
computing people will be interested in having 64 GB
memory support in this simple way.

> Fully populating both the transmit and receive windows for
> 1M connections is 32G of RAM, right there... and it better
> be kernel RAM, or you're screwed.

Well, you _could_ store this memory in "files", which
get mapped and unmapped by the same code the filesystem
code uses to access file data in non-kernel-mapped RAM.

*runs like hell*

regards,

Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

http://www.surriel.com/		http://distro.conectiva.com/

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