Re: [Xen-devel] Re: [Xen-users] Re: Xen 3.1 released!

[Tomasz Chmielewski <mangoo@xxxxxxxx>]

Keir Fraser schrieb:
> On 25/5/07 14:20, "Tomasz Chmielewski" <mangoo@xxxxxxxx> wrote:
>
> > > Hmmm... That's not so explicable. Obviously something in save/restore is
> > > causing unpageable allocations to happen. Could be pagetables for mappings
> > > of HVM guest memory, or something like that. Needs investigating further, I
> > > think.
> > Could be.
> >
> > Now that I repeated the save/restore a couple of times, total RAM usage
> > for dom0 jumps to ~700 MB sometimes during domain save (dom0 has now
> > about 2.3 GB RAM, domU has 1.7 GB RAM; 4 GB RAM installed now in the
> > machine).
> The only thing I would expect could so dramatically inflate dom0's memory
> usage would be caching of disc blocks from the saved image file. But we
> added explicit cache flushing to both domain-save and domain-restore before
> releasing 3.1. The flushes are only advisory though, so perhaps they are
> getting ignored for some reason.
For your notice, I just saw 1.3 GB RAM usage when doing a 1.7 GB HVM 
domain save :)

--
Tomasz Chmielewski
http://wpkg.org


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