Re: 4gb ram shows as 3.3gb

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Martin Marques wrote:
Nick wrote:
Hi,

Running Centos 5 (32bit)... running a server with 4gb of RAM and it's shows up as:

[root@ubercore1 ~]# free
            total       used       free     shared    buffers     cached
Mem: 3369544 2549668 819876 0 29008 2382360
-/+ buffers/cache:     138300    3231244
Swap:      6291448          0    6291448

I know 4gb is the limit for a 32bit OS but i thought it would be able to use all of it? Is there another kernel i was supposed to install?

The thing is, and I'm still trying to find a solution for one of our servers, the the memory addresses from 4Gb down are used for PCI, VGA, onboard stuff, and even though the memory isn't used, the addresses are, and so they are not passed to the OS.

Can you send some info on the motherboard you have?

It's a Dell Poweredge 1950 straight out of the box...
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