[Qemu-devel] Re: KVM call agenda for Jan 26

[Anthony Liguori]

On 01/26/2010 08:50 AM, Alexander Graf wrote:
> On 26.01.2010, at 15:47, Avi Kivity wrote:
>
>    
> > On 01/26/2010 04:42 PM, Alexander Graf wrote:
> >      
> > >        
> > > > That's /proc/cpuinfo, we should just extend it, maybe that's what Alex meant, 
> > > > but I'd like to see something more capable.
> > > >
> > > >          
> > > I think we're all looking at different use-cases.
> > >
> > > First and frontmost the one type of user I'm concerned with in this case is a 
> > > mortal end-user who doesn't know that much about virtualization details and 
> > > doesn't care what NPT is. He just wants to have a VM running and wants to know 
> > > how well it'll work.
> > >
> > >        
> > It really depends on what he does with it.  3D gaming? might have a different 
> > experience from the always exciting kernel builds.
> >      
> Well, we can give an estimation (based on previous measurements) for certain 
> subsystems. Like I proposed in the original mail, we can actually give users 
> information about virtual CPU speed.
>    

The problem with making an unqualified statement about something like 
"virtual CPU speed" is that if a user runs a random benchmark, and gets 
less than XX%, they'll consider it a bug and be unhappy.

I'm very reluctant to take anything in QEMU that makes promises about 
virtualization performance.  It's a bad idea IMHO.

> With SPICE hopefully merged one day we also could give some estimates on 3D 
> performance.
>    

Spice doesn't support 3D today.

Regards,

Anthony Liguori

> Alex