Messages in this thread |  | | | Date | Sun, 18 Oct 1998 23:11:32 +1000 (EST) | | From | Tony Cook <> | | Subject | Re: Does linux first allocate under 64MB? |
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On 18 Oct 1998, Marc MERLIN wrote: > The reason I ask is that as you know, many motherboards still have those > braindead intel chipsets that can only cache 64MB of ram.
I have one of those broken chipsets (in one machine, anyway).
> If you put more memory in one of those machines, will linux first use the > lower 64MB, and then the rest? Is there any way to prioritize memory like > you can prioritize swap, and tell the kernel that memory between 64M and 96M > for instance, is only to be used the rest of the memory is full, and if > possible with data that is not as crucial (like disk cache)?
AFAIK, you can't get Linux to prioritize it's use of memory in the way you describe, but there's a patch at http://www.andrew.cmu.edu/~keryan/slram/ which let's you use the slower RAM as fast swap, as longer as it's at a higher physical address than the fast memory.
I've found this patch quite useful.
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