Am Wed, 20 Jan 2016 08:12:33 +0100
schrieb "J. Roeleveld" <jo...@antarean.org>:

> > > Overcommitting memory is, i think, on the roadmap for Xen.
> > > (Disclaimer: At least, I seem to remember reading that
> > > somewhere)  
> > 
> > That would be a nice feature.  
> 
> For VDIs, I might consider using it.
> But considering most OSs tend to fill up all available memory with
> caches, I expect performance issues.

This is what memory ballooning is for: To reclaim tight memory
resources from discardable OS memory. The host cache will take care of
doing proper caching.

-- 
Regards,
Kai

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