Dell PE 1950 - Only seeing 3.2 gigs of ram
cswiger at mac.com
Wed Jan 10 22:45:38 UTC 2007
On Jan 10, 2007, at 1:47 PM, Jeff MacDonald wrote:
> I put a fresh install of 6.1-RELEASE on a dell poweredge 1950 server.
> It's configured with 4 gigs of ram.
> However when I boot i get the following right before DMESG
> 786432k above 4GB ignored
> Which is strange, but then dmesg shows this
> real memory = 3489300480 (3327 MB)
> avail memory = 3414659072 (3256 MB)
Unless you compile a kernel with PAE, which extends the addressable
physical memory, or have a EM64T capable CPU, the system is limited
to only addressing 4GB of memory. However, the system also needs to
make the various PCI devices and the AGP aperture accessible in
memory space, so they typically reserve 512MB or 768MB at the top of
the address space for that purpose; that memory is being remapped
above 4GB, causing the message you see.
It's probably reasonable to either live with it, or move 1GB to some
other machine, if you can't run a 64-bit system or you have issues
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