> I read the SMP FAQ, and I couldn't find anything about this, so I thought
> I'd try here for help. I'm fairly new at this so I'll try my best not to
> sound like an idiot. =)
this is not SMP related first of all so that is why...
> I just built an SMP box with the following:
>
> 2 celeron 300A PPGa
> 2 MSI slot1 adapters
> 1 128 MB DIMM
> SuperMicro P6DBE board
> ....
I have heard that Celerons are not that good for SMP as they do not have much
Cache, but that is another issue, they work..
> Here's the probelm - I installed SUSE 6.1 and only 64MB of memory is
> reported by top and /proc/meminfo. I recompiled the kernel for SMP and
> both processors and everything else seems to be running correctly, I just
> can't get it to see all 128MB of memory.
1) as of 2.0.36 the Linux kernels detect memory using int13 routine(?), which
basically gets the size from the BIOS, so I am told. I know that 2.0.36 does
do this, and I imagine 2.0.37 does also.
2) the 2.2.x kernels also use this routine, and by default wil recognize up
to 960Meg-1Gig of RAM, and the ac patches allow for detection of up to 2
Gigs.
If one system is recognizing the memory and another is not then it is
hardware related.
Since Linux uses to BIOS to size memory, then it is your BIOS
Check your BIOS.
My BIOS has a setting that will change the memory cachable size from 64Meg or
less to 512Meg (max amount of memory my board supports)
If your system is not detecting all 128Megs, which is what I have, then it is
most likely your BIOS.
you can force linux to detect your memory by ading the mem=128M at the
command line, but as I stated for 2.0.36+ and 2.2.x kernels this should not
be necessary.
>
> Another interesting note - when I upgraded the machine, I took a hard
> drive that already had SUSE 6.1 installed on it out of an old machine
> (Pentium 200) to use on my new one. When I booted it up, it seen all 128MB
> of memory.
>
> Any ideas?
>
> thanks
> pete
>
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--
Joseph Acosta ........ SMP Linux 2.2.10 / RedHat 6.0
home: [EMAIL PROTECTED]
http://www.mindspring.com/~joeja
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