From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Cure <kvm@cure.nom.fr>
Subject: Re: performance trouble
Date: Tue, 20 Mar 2012 10:32:20 +0100
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Cc: Avi Kivity <avi@redhat.com>, kvm@vger.kernel.org,
	Vadim Rozenfeld <vrozenfe@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
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		hello,

Le Mon, Mar 19, 2012 at 12:51:34PM +0200, Gleb Natapov ecrivait :
>
> Can you run the same test on Linux guest and on Windows vm with 1 cpu?
> I see a lot of IPIs between vcpus.

	I run the same slowly fonction (to remember the guest is
Windows2008R2 64bits). The report is here :
	http://www.roullier.net/Report/report-3.2-vhost-net-1vcpu.txt.gz

	and the response time is ~13s.
  
	thanks for tracking this trouble,

	David.