Does linux first allocate under 64MB?

Marc MERLIN (marc_merlin@magic.metawire.com)
18 Oct 1998 01:59:57 GMT


The reason I ask is that as you know, many motherboards still have those
braindead intel chipsets that can only cache 64MB of ram.

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)?

I can also find other examples, where you'd mix slower and faster memory in
the same PC (like 60ns EDO and old 70ns FPM). But then, I don't know if the
bios itself will actually handle each pair of memory banks at its optimal
speed, or if it will just take the lowest common denominator...

Marc

-- 
"Microsoft is to software what McDonalds is to gourmet cooking"
 
Home page: http://magic.metawire.com/~merlin/ (friendly to non IE browsers)
Finger merlin@magic.metawire.com for PGP key and other contact information

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/