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1017796
2006 Jan 06
0
x86_64 and memory reservation
...am, with 432K reserved
in e820-All mode: 1016MB ram, with 0K reserved
This seems OK and everything works as expected.
However when I boot CentOS 4.2 x86_64 (latest kernel) I end up with _way_
less available RAM - 21.5 MB is listed as reserved by the kernel - why???
To quote from dmesg:
Memory: 1017796k/1040000k available (2398k kernel code, 21460k reserved,
1303k data, 164k init)
This seems to make little sense... is this reserved area actually used by
the kernel for something? or is it just sitting idly waiting for a better
tomorrow?
Cheers,
MaZe.