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Date: Tue, 12 Jun 2012 18:39:35 +0300
From: Gleb Natapov <gleb@redhat.com>
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References: <loom.20120608T181832-528@post.gmane.org>
	<1339173966.26976.95.camel@ul30vt> <4FD23221.5090208@hp.com>
	<1339177340.26976.111.camel@ul30vt> <4FD23CF9.5000203@hp.com>
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Subject: Re: [Qemu-devel] Large sized guest taking for ever to boot...
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To: Chegu Vinod <chegu_vinod@hp.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, Alex Williamson <alex.williamson@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>

On Tue, Jun 12, 2012 at 08:33:59AM -0700, Chegu Vinod wrote:
> I rebuilt the 3.4.1 kernel in the guest from scratch and retried my
> experiments and measured
> the boot times...
> 
> a) Host :  RHEL6.3 RC1 + qemu-kvm (that came with it) &  Guest :
> RHEL6.3 RC1:  ~1 min
> 
> b) Host :3.4.1 + qemu-kvm.git & Guest : RHEL6.3RC1      -   ~1 min
> 
> c) Host :3.4.1 + qemu-kvm.git & Guest : 3.4.1      -   ~10 mins
> 
> d) Host :3.4.1 + qemu.git & Guest : RHEL6.3 RC1  -    ~1 min
> 
> e) Host :3.4.1 + qemu.git & Guest : 3.4.1                   -    ~14 mins
> 
> 
> In both the case (c) & (e) had quite a few warning/error messages
> from udevd.
> 
> FYI..
> Vinod
> PS:  Haven't had the time to do any further analysis...as the
> machine is being used for
> other experiments...
> 
> 
Next time you get the machine can you try running (b) but adding
-hypervisor to your -cpu config.

--
			Gleb.