[Pkg-xen-devel] Re: Bug#368531: Debian Xen kernel-image?

[Adam Borowski]

On Wed, May 24, 2006 at 08:53:20PM -0700, Jeremy T. Bouse wrote:
> >On Wed, May 24, 2006 at 11:50:55PM +0200, Stephane Bortzmeyer wrote:
> >>kernel          /boot/xen-3.0-i386.gz dom0_mem=32M
>    As far as I understood Xen3 doesn't even really need the dom0_mem 
> option on the kernel line as dom0 gets all mem not assigned to domU's. 
> Myself I only have "kernel <dom0 kernel image>" in my grub menu.lst.

In theory dom0 should baloon down to give memory to domUs as they
need it.  However, even with nothing but xend and ntpd running, dom0
usually fails to go down to 64MB.  Specifying that number on the
kernel line will prevent dom0 from ever grabbing more (or less) memory
than that, so there is no balooning that could fail.

(Disclaimer: I'm still on 3.0.1-0tha6 from debianbase.de, I'm
reluctant to upgrade production servers without a good reason).
-- 
1KB		// Microsoft corollary to Hanlon's razor:
		//	Never attribute to stupidity what can be
		//	adequately explained by malice.