Re: [Qemu-devel] Large sized guest taking for ever to boot...

[Chegu Vinod]

On 6/12/2012 8:39 AM, Gleb Natapov wrote:
> 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.

I tried that and didn't make any difference...i.e. the RHEL6.3 RC1 guest 
booted in about ~1 min.

Vinod
> --
>                         Gleb.