RE: max RAM size
> -----Message d'origine-----
> De : dman [mailto:dsh8290@rit.edu]
> Envoyé : jeudi 8 novembre 2001 04:35
> À : debian-user@lists.debian.org
> Objet : Re: max RAM size
>
>
> On Wed, Nov 07, 2001 at 08:19:21AM -0800, Jeffrey W. Baker wrote:
> |
> | On Tue, 6 Nov 2001, François THOMAS wrote:
> |
> | > Hello list
> | >
> | > I have upgraded the physical amount of RAM on a Potato server (r3).
> | > Unfortunately, it looks like only 960M are managed by the
> kernel... Is there
> | > a *safe* way to make my system manage all the available RAM
> (=> 2 Gigs) ?
> | > This is a production server, and I cannot afford the risk of
> destroying the
> | > system (I would prefer to continue using half the available memory !).
> | > Any advice ?
> |
> | Recompile your kernel with higmem enabled.
>
> IIRC (which is not very probable recently) that is only necessary for
> > 4GB of RAM.
>
I found the following info on
http://www.vmware.com/support/reference/common/big_mem.html :
"By default, Linux kernels in the 2.2.x series support 1GB of physical
memory.
[...2 solutions:]
Utilize the CONFIG_2GB option and recompile your kernel as a 2GB kernel
Enable the CONFIG_BIGMEM option to map more physical memory"
I did not try to pass mem=2000M to the kernel, because i already found in
the log something like "Warning only 960M will be used", which sounds like
more RAM has been correctly reported by the bios.
I think I will test kernel compilation on another box, not a production one.
Anyway, I wanted to have a rescue server ready just in case, so it will not
be wasted time...
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