Re: On guest free page hinting and OOM

[Michael S. Tsirkin]

On Mon, Apr 01, 2019 at 04:11:42PM +0200, David Hildenbrand wrote:
> > The interesting thing is most probably: Will the hinting size usually be
> > reasonable small? At least I guess a guest with 4TB of RAM will not
> > suddenly get a hinting size of hundreds of GB. Most probably also only
> > something in the range of 1GB. But this is an interesting question to
> > look into.
> > 
> > Also, if the admin does not care about performance implications when
> > already close to hinting, no need to add the additional 1Gb to the ram size.
> 
> "close to OOM" is what I meant.

Problem is, host admin is the one adding memory. Guest admin is
the one that knows about performance.

> 
> -- 
> 
> Thanks,
> 
> David / dhildenb