RE: [gentoo-amd64] Re: I can use only 3GB aout of install 6GB - SOLVED

[Nadav Horesh]

It was a BIOS problem that was solved by a BIOS update.

Sorry for bothering you,

  Nadav.

N.B.

  A year ago I tried the NUMA option. The good news is that the computer worked fine, but of-course it's surplus.



-----הודעה מקורית-----
מאת: Volker Armin Hemmann [mailto:volkerarmin@××××××××××.com]
נשלח: ה 07-מאי-09 02:08
אל: gentoo-amd64@l.g.o
נושא: Re: [gentoo-amd64]  Re: I can use only 3GB aout of install 6GB
 
On Mittwoch 06 Mai 2009, Branko Badrljica wrote:
> Duncan wrote:
> > Then, look at memory model.  Here, with current kernels, I have only one
> > option, Sparse, evidently limited by my choice of hardware (Processor
> > family and/or Supported processor vendor options, higher on the page, I'd
> > guess or perhaps probed from the BIOS).  However with older kernels, and
> > presumably now if I were to choose hardware other than AMD Opteron/K8 (or
> > choose a different BIOS option), there are Flat and Discontiguous options
> > as well.  Unfortunately, I can't tell you which options are correct for
> > your (Intel) hardware.  If you have multiple memory model choices, you
> > may just have to try them and see.
>
> I thought those extra options were just for NUMA systems and were about
> how the memory from several NUMA nodes "fits together" ie whether it has
> to form one continuos memory range or not.
>
>
> WRT to original question, I'd update BIOS and kernel to the latest
> version available and if that fails to rectifyy the problem, I'd try to
> toy with kernel memory option parameters

well, duncan has some old hardware and likes to turn on a lot of superfluos 
options. Don't touch the numa stuff. Don't even enable it if you have 2cores 
or intel system.