Re: 4GB memory and Intel Dual-Core system

["linux-os \(Dick Johnson\)" <linux-os@analogic.com>]

On Thu, 27 Oct 2005, Marcel Holtmann wrote:

> Hi guys,
>
> I installed 4 x 1 GB DDR2 memory in my Intel Dual-Core 2.80GHz system,
> but it shows me only 3.3 GB of RAM:
>
> Memory: 3339124k/3398656k available (2029k kernel code, 56232k reserved,
> 741k data, 184k init)
>
> The BIOS and dmidecode tells me that I have 4 GB of RAM installed and I
> don't have any idea where to look for details. What information do you
> need to analyze this?
>
> Regards
>
> Marcel

Hmmm. Do you have a screen card? Trick question. It takes address-
space. How about stuff on the PCI bus? That takes address-space
also. If you look at the boot log, you will probably find that
there is a lot of "reserved" address-space. Since RAM needs
to "share" such address-space, any RAM behind the reserved addresses
will not be accessed.

Cheers,
Dick Johnson
Penguin : Linux version 2.6.13.4 on an i686 machine (5589.55 BogoMips).
Warning : 98.36% of all statistics are fiction.
.

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