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Date: Wed, 24 Oct 2001 10:38:13 +0200 (CEST)
From: Dirk Moerenhout <dirk@staf.planetinternet.be>
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To: J Sloan <jjs@lexus.com>
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Subject: Re: More memory == better?
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Message-ID: <Pine.LNX.4.33.0110241029100.208-100000@dirk>
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On Tue, 23 Oct 2001, J Sloan wrote:

> If you don't enable highmem support, you'll
> be able to use about 960 MB of your 1 GB -
> no big loss, right?

Actually if you wish you can use your full 1GB just fine without HIGHMEM:

In /proc/meminfo:
MemTotal:      1025360 kB
LowTotal:      1025360 kB

At boot:
kernel: On node 0 totalpages: 262128
kernel: zone(0): 4096 pages.
kernel: zone(1): 258032 pages.
kernel: zone(2): 0 pages.

The related config parameters:
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_1GB is not set
CONFIG_2GB=y
# CONFIG_3GB is not set

For what I know this trick just limits you on the amount of swap you can
have. The suggestion came from Ingo Molnar and it works fine for me.

Dirk Moerenhout ///// System Administrator ///// Planet Internet NV

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