[ILUG] physical RAM != detected RAM (Linux 2.6.2)

[Niall O Broin]

On Thursday 5 February 2004, foobar at mighty.co.za (Dale Gallagher) wrote:

>Nope, not quite ;-)  Just re-compiled with 64GB memory
>support and voila, dmesg reports:
>
>127MB HIGHMEM available.
>896MB LOWMEM available. 

Heh - I just argued the toss with someone about this this morning and
lost. I thought the choices were no highmem, up to 2GB, up to 4GB and up
to 64GB but the 'up to 2GB' was a figment. However, you shouldn't use
the 64GB option unless your box has > 4GB of memory because otherwise
you're slowing your kernel for nothing.


Niall