Port-xen archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: installing into RAID-1: HOWTO and example



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Manuel,

On 2 Mar 2006, at 23:13, Manuel Bouyer wrote:

On Wed, Mar 01, 2006 at 08:45:58PM -0500, Greg Troxel wrote:
[...]
----------------------------------------
Intel 915 chipset with 4GB RAM

BIOS set to limit VGA memory reservation to smallest values
need to investigate why 768 is reserved (pci hole?) after xen

Yes, this is the PCI hole. I've got the same issue with a i945.
Despite the claim that the motherboard "supports" 4Gb and using a EM64T CPU, 768M were stolen for PCI. By playing with BIOS options, disabling all unused
devices I trimmed this down to ~600M.

In order to really use 4GB you need a i955X chipset.

I have an i965 chipset and I also lose 768MB of 4GB to the PCI hole (it's sort of ok, at least I was aware of it when deploying this machine).

However, my question is what would happen if I add more memory to the machine. I.e. if I boost it to 8GB would I still only get 3.25GB for Xen or would I get 7.25GB not having to bother about the hole in the middle?

Johan

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)

iQCVAwUBRidvh/otlDfa2H4ZAQKZfgQAk2+aS8efHSH1Le8DE5nLMovjLUt2Jrk4
YB6ydwA618JobNQu8X1pEUdFxURmNUTva4Fs5UR2/WcO4H/MzbjYGvlK/hvr2tai
wDJFI9Ykcw25XM4Z7HL52T24u+2EaFRgHPeX+uzUA/BgIJmWaCcYL7NZvab56V9f
7WzLnVMaGcE=
=4Zn1
-----END PGP SIGNATURE-----



Home | Main Index | Thread Index | Old Index