slow (s-l-o-w) install

Frank Cox theatre at
Sat Feb 16 18:50:04 UTC 2008

On Sat, 16 Feb 2008 10:43:37 +0000
Alan Cox <alan at> wrote:

> > Now I'm trying to install F8/x86_64 on it, and the installer is running
> > amazingly slowly.  It took about ten minutes before the initial graphical
> Probably wrong memory caching in the BIOS. That's a common cause of those
> symptoms. If so boot with mem=2G or be patient and once you've got it
> installed take a look at /proc/mtrr and that will show which memory the
> system marked as cached. If its wrong then you can tweak the settings
> and/or beat up the BIOS vendor

You have definitely hit the nail on the head.

Booting with mem=2G makes this computer perform like it should.

This is an Intel DG33FB motherboard and I downloaded the latest bios, version
0372 dated January 29.  Unfortunately, that didn't solve the problem.  Booting
"normally" runs at the snail's pace that I previously mentioned.

Booting with mem=2G works fine, as I said.

The contents of /proc/mtrr when this machine is booted with mem=2G are as

reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
reg02: base=0xc0000000 (3072MB), size= 256MB: write-back, count=1
reg03: base=0xcf800000 (3320MB), size=   8MB: uncachable, count=1
reg04: base=0xcf400000 (3316MB), size=   4MB: uncachable, count=1
reg05: base=0x100000000 (4096MB), size= 512MB: write-back, count=1
reg06: base=0x120000000 (4608MB), size= 128MB: write-back, count=1
reg07: base=0xd0000000 (3328MB), size= 256MB: write-combining, count=1

I looked in the bios setup and didn't see anything that obviously appeared to
be a method for telling the machine how to handle memory caching.  On the other
hand, I have no idea what I'm looking for so that setting may be staring me
right in the face and I'm not recognizing it.

So.... what should my next step be?

MELVILLE THEATRE ~ Melville Sask ~

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