I have added 2GM of RAM to my machine, now I have 4 GB (on a 64bit machine so no problem with memory adressing).
The problem is that I can see "only" 4060496 kB (value found using top), which means ~3965 MB (~3.87 GB).
I think I have a problem whit MTRR:
- Code: Select all
$ cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
reg02: base=0xc0000000 (3072MB), size= 512MB: write-back, count=1
reg03: base=0xdff00000 (3583MB), size= 1MB: uncachable, count=1
reg04: base=0x100000000 (4096MB), size= 512MB: write-back, count=1
Note the line reg03: uncachable
I have found some information here http://www.gentoo.org/doc/en/nvidia-guide.xml#doc_chap4, it is said that to resolve the issue one has to change the MTRR setting in the BIOS from continuous to discrete BUT I can't see such a setting in my BIOS (ASUS M2N Sli deluxe). Actually I don't think that this setting is controlled by the BIOS in K8 processors...
Anyone has an idea?