Re: [Xen-devel] HVM and free_memory query

[Apoorva Kulkarni <apoorva@xxxxxxxxx>]

Keir Fraser wrote:
> On 10/07/2009 19:33, "Apoorva Kulkarni" <apoorva@xxxxxxxxx> wrote:
>
>   
> > Thank you for your quick response. That helps a lot.
> >
> > In our case we need to know precisely how much overhead memory is
> > required by xen per domain. So is it okay for us to assume that it will
> > always be under 0.8% or could there be exceptions to this (e.g.
> > different fractions for a Solaris 10 HVM vs Windows HVM) ?
> >     
> Precisely, the overhead is determined by xend as: 8kB per 1MB of guest
> memory, plus 1MB per guest virtual cpu.
>
> See xen/xend/image.py:X86_HVM_ImageHandler:getRequiredShadowMemory()
>
>  -- Keir
>   
Exactly what we were looking for. Thanks a ton.

--
Apoorva Kulkarni
3Tera, Inc.

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