[buug] 4 gig limit

John de la Garza john at jjdev.com
Wed Sep 27 18:42:43 PDT 2006


I have a 32bit box running linux.  It has 8 GB.   I understand in a 32
bit address space you can't address of 4 GB.  Since linux uses virtual
memory I have read that one process can access up to 4 GB.

I read to use this on systems with more than 4 GB of physical ram you
must have PentiumPro with PAE (Physical Address Extension).

I see this:

[root at hela init.d]# cat /proc/meminfo  | head -n2
MemTotal:      2074876 kB
MemFree:       1270664 kB

here is my cpu info
[root at hela init.d]# cat /proc/cpuinfo  | grep name
model name      : Intel(R) Pentium(R) III CPU family      1400MHz
model name      : Intel(R) Pentium(R) III CPU family      1400MHz


I was told these are Xeon chips.  Are Xeon classified as Pent III?
and do these chips have PAE?


I guess my ultimate question is can I use the 8GB of ram I have at
least at a per process level?



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