Re: Good news for SPARC/Linux

David S. Miller (davem@dm.cobaltmicro.com)
Wed, 9 Dec 1998 02:10:20 -0800


Date: Wed, 09 Dec 1998 02:03:16 +0100
From: Edgar Toernig <froese@gmx.de>

Before I get 80 more instances of the same question....

> Memory: 2059720k available (1600k kernel code, 23528k data, 184k init)

But what's this? 23MB kernel data? ^^^^^^

Each page in the system has a "struct page", on 64-bit machines this
is around 180 bytes in size, physical memory in sparc systems is not
contiguous, so if the physical memory is spaced out from address 0 to
address 4GB I eat the space for all the "struct pages" in that area.
(We free it up later don't worry)

and besides, 23MB is peanuts on a 2GB system :-)

Later,
David S. Miller
davem@dm.cobaltmicro.com

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