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1 | There are several classic problems related to memory on Linux |
2 | systems. |
3 | |
4 | 1) There are some motherboards that will not cache above |
5 | a certain quantity of memory. If you have one of these |
6 | motherboards, your system will be SLOWER, not faster |
7 | as you add more memory. Consider exchanging your |
8 | motherboard. |
9 | |
10 | All of these problems can be addressed with the "mem=XXXM" boot option |
11 | (where XXX is the size of RAM to use in megabytes). |
12 | It can also tell Linux to use less memory than is actually installed. |
13 | If you use "mem=" on a machine with PCI, consider using "memmap=" to avoid |
14 | physical address space collisions. |
15 | |
16 | See the documentation of your boot loader (LILO, grub, loadlin, etc.) about |
17 | how to pass options to the kernel. |
18 | |
19 | There are other memory problems which Linux cannot deal with. Random |
20 | corruption of memory is usually a sign of serious hardware trouble. |
21 | Try: |
22 | |
23 | * Reducing memory settings in the BIOS to the most conservative |
24 | timings. |
25 | |
26 | * Adding a cooling fan. |
27 | |
28 | * Not overclocking your CPU. |
29 | |
30 | * Having the memory tested in a memory tester or exchanged |
31 | with the vendor. Consider testing it with memtest86 yourself. |
32 | |
33 | * Exchanging your CPU, cache, or motherboard for one that works. |
34 |
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od-2011-09-18
v2.6.34-rc5
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v3.9