Re: performance trouble

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On Tue, Mar 20, 2012 at 12:18:39PM +0100, David Cure wrote:
> Le Tue, Mar 20, 2012 at 11:45:41AM +0200, Gleb Natapov ecrivait :
> > 
> > This is without -no-hpet :) Also I hope you are not measuring time while
> 
> 	haaaaa yes, sorry for the mistake.
> 
> > tracing since it supposed to be slower.  Can you please try to run with
> > -cpu host,-hypervisor and -no-hpet and see if times are better.
> 
> 	I use libvirt to start the VM, do you know how to modify the xml
> file to have this option generated (I know for the -no-hpet, but not for
> other) ?
> 	If not, I capture the command and modify it to run directly.
> 
I was pointed to here:
http://berrange.com/posts/2010/02/15/guest-cpu-model-configuration-in-libvirt-with-qemukvm/

Try to add <feature policy='disable' name='hypervisor'/> to cpu
definition in XML and check command line.

--
			Gleb.
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