From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Williamson <alex.williamson@redhat.com>
Subject: Re: Slow PXE boot in qemu.git (fast in qemu-kvm.git)
Date: Mon, 11 Apr 2011 13:00:32 -0600
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	 <4D9FAD71.5020503@codemonkey.ws>  <20110411153519.37f8316a@doriath>
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Cc: Anthony Liguori <anthony@codemonkey.ws>, qemu-devel@nongnu.org,
	kvm@vger.kernel.org, avi@redhat.com, mtosatti@redhat.com,
	mst@redhat.com, blauwirbel@gmail.com
To: Luiz Capitulino <lcapitulino@redhat.com>
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On Mon, 2011-04-11 at 15:35 -0300, Luiz Capitulino wrote:
> On Fri, 08 Apr 2011 19:50:57 -0500
> Anthony Liguori <anthony@codemonkey.ws> wrote:
> 
> > On 04/08/2011 06:25 PM, Luiz Capitulino wrote:
> > > Hi there,
> > >
> > > Summary:
> > >
> > >   - PXE boot in qemu.git (HEAD f124a41) is quite slow, more than 5 minutes. Got
> > >     the problem with e1000, virtio and rtl8139. However, pcnet *works* (it's
> > >     as fast as qemu-kvm.git)
> > >
> > >   - PXE boot in qemu-kvm.git (HEAD df85c051) is fast, less than a minute. Tried
> > >     with e1000, virtio and rtl8139 (I don't remember if I tried with pcnet)
> > >

I was having this problem too, but I think it's because I forgot to
build qemu with --enable-io-thread, which is the default for qemu-kvm.
Can you re-configure and build with that and see if it's fast?  Thanks,

Alex