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

[Anthony Liguori <anthony@codemonkey.ws>]

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