[CentOS] 4gb ram shows as 3.3gb
clintd at scms.waikato.ac.nz
Fri Jul 27 02:12:14 UTC 2007
Martin Marques wrote:
> Nick wrote:
>> Running Centos 5 (32bit)... running a server with 4gb of RAM and it's
>> shows up as:
>> [root at ubercore1 ~]# free
>> total used free shared buffers cached
>> Mem: 3369544 2549668 819876 0 29008
>> -/+ 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?
Try passing agp=off to the kernel. If AGP is not required.
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