Linuxguy123 wrote:
Dennis Gilmore suggested that I boot a 64 bit Live CD to see what it
said about memory usage. So I did:
[fedora@localhost ~]$ free -m
total used free shared buffers
cached
Mem: 3969 1286 2682 0 143
827
-/+ buffers/cache: 315 3654
Swap: 1992 0 1992
Here is what it looks like under my 32 bit installation:
$ free -m
total used free shared buffers
cached
Mem: 3034 978 2055 0 33
619
-/+ buffers/cache: 326 2708
Swap: 1992 0 1992
I appear to gain 935MB of RAM running the 64 bit version. This is in
spite of the spec sheet on my laptop saying:
Could it be simply that free does not show the space needed by the
kernel.... which needs (at least some parts of it)
to be constantly in memory. I do not think that 127Mb is such a big
price to pay for the kernel. Note that to use your
memory in a single process you need x86-64. The standard x86 linux
limits the processes memory to 2Gb.
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