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Subject: Re: i686 SMP systems with more then 12 GB ram with 2.4.x kernel ?
To: harald.holzer@eunet.at (Harald Holzer)
Date: Thu, 3 Jan 2002 00:16:53 +0000 (GMT)
Cc: linux-kernel@vger.kernel.org (linux-kernel@vger.kernel.org),
        wookie@osdl.org (Timothy D. Witham)
In-Reply-To: <1010015450.15492.19.camel@hh2.hhhome.at> from "Harald Holzer" at Jan 03, 2002 12:50:50 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> 16GB ram, 269,424kB reserved
> 32GB ram, 532,080kB reserved, usable low mem: 352 MB
> 64GB ram ?? 

64Gb basically you can forget

> Which function does the reserved memory fulfill ?
> Is it all for paging ?

A lot of it is the page structs (64bytes per page - which really should be
nearer the 32 some rival Unix OS's achieve on x86)
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