Compaq ProLiant 6400R dram above 4Gb [was Re: Intel SR1500AL doesn't see 4 GB]

[jonathan michaels]

On Sat, Sep 01, 2007 at 12:02:55PM +0200, Bernd Walter wrote:
> On Fri, Aug 31, 2007 at 10:31:44PM +0500, Rihad wrote:

> > I'm attempting to install FreeBSD 6.2 on Intel Server System SR1500AL 
> > with 4 gigs ram and CPU: Intel(R) Xeon(R) CPU            5130  @ 2.00GHz 
> > (2002.99-MHz 686-class CPU). The install goes OK, but FreeBSD doesn't 
> > recognize that there's 4 gigs of ram unless I rebuild the kernel with 
> > PAE enabled; it sees only ~2.5 gb otherwise. And there's a suspicious 
> > white line emmited during boot: like "1.5 gigs above 4 were ignored". 
> > What's up with that? As I'm new to high-end hardware, am I using the 
> > right FreeBSD build of i386? Why can't it see 4 gigs without PAE?
> 
> You only have 4g physical address space without PAE and your board takes
> 1.5G for memory mapping and such, so you only have 2.5G for RAM.
> Most boards just claim 0.5G, but 1.5G is not that unusual.
> Either use PAE, install amd64 if your CPU is 64bit capable or live with
> just 2.5G.

I am in a similar position, except I recently upgraded my server (Compaq
ProLiant 6400R) by adding two more Xeon 500/100 Mhz L2 1 Mb and added 4 Gb
dram to the original 1512 Mb .. now I am in the same sort of position
with FreeBSD telling me that it will be ignoring the top 1512 Mb or
there abouts

> There is no other option, since this is a hardware limitation.

My Xeons are the 32 bit versions so I suppose that in my case I get to
use PAE ?? or do I loose the "top" 1512 Mb, or does my machine loose
that memory completely and I would be better moving it to another
machine ??

thanks in advance

most kind regards

jonathan

-- 
================================================================
powered by ..
QNX, OS9 and freeBSD  --  http://caamora com au/operating system
==== === appropriate solution in an inappropriate world === ====