mirror of
https://github.com/torvalds/linux.git
synced 2024-12-25 12:21:37 +00:00
3b2b9a875d
Remove some very outdated recommendations in Documentation/memory.txt Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
There are several classic problems related to memory on Linux
|
|
systems.
|
|
|
|
1) There are some motherboards that will not cache above
|
|
a certain quantity of memory. If you have one of these
|
|
motherboards, your system will be SLOWER, not faster
|
|
as you add more memory. Consider exchanging your
|
|
motherboard.
|
|
|
|
All of these problems can be addressed with the "mem=XXXM" boot option
|
|
(where XXX is the size of RAM to use in megabytes).
|
|
It can also tell Linux to use less memory than is actually installed.
|
|
If you use "mem=" on a machine with PCI, consider using "memmap=" to avoid
|
|
physical address space collisions.
|
|
|
|
See the documentation of your boot loader (LILO, grub, loadlin, etc.) about
|
|
how to pass options to the kernel.
|
|
|
|
There are other memory problems which Linux cannot deal with. Random
|
|
corruption of memory is usually a sign of serious hardware trouble.
|
|
Try:
|
|
|
|
* Reducing memory settings in the BIOS to the most conservative
|
|
timings.
|
|
|
|
* Adding a cooling fan.
|
|
|
|
* Not overclocking your CPU.
|
|
|
|
* Having the memory tested in a memory tester or exchanged
|
|
with the vendor. Consider testing it with memtest86 yourself.
|
|
|
|
* Exchanging your CPU, cache, or motherboard for one that works.
|