[Spice-devel] Performance expectations

[Alon Levy]

On Tue, Feb 21, 2012 at 10:49:04AM -0700, Kai Meyer wrote:
> 
> 
> On 02/20/2012 05:19 AM, Yonit Halperin wrote:
> >Hi,
> >On 02/15/2012 06:22 PM, Kai Meyer wrote:
> >>
> >>
> >>On 02/15/2012 05:19 AM, Yonit Halperin wrote:
> >>>On 02/15/2012 01:16 AM, Kai Meyer wrote:
> >>>>Help me set my expectations straight. Should I be able to
> >>>>use spice from
> >>>>inside a VM on my local machine to view video streaming services like
> >>>>Youtube, Hulu, and Netflix? I have RHEL 6 Workstation for my host, and
> >>>>Win7 Pro as my guest. I've installed the qxl driver in the
> >>>>VM, and used
> >>>>Virt-manager to configure the VM to use Spice as my Display and Video
> >>>>Model is qxl.
> >>>>
> >>>You should be able to do it. But it depends on you network conditions
> >>>(client to host).
> >>>
> >>>Yonit.
> >>>>-Kai Meyer
> >>>>_______________________________________________
> >>>>Spice-devel mailing list
> >>>>Spice-devel at lists.freedesktop.org
> >>>>http://lists.freedesktop.org/mailman/listinfo/spice-devel
> >>>
> >>
> >>This is a VM on my local machine, so I'm effectively connecting to
> >>localhost. Network conditions should be the least concern, yet playback
> >>is terrible.
> >>
> >Which spice client do you run?
> >Another possible reason for the slow playback is that Rhel 6
> >doesn't have libjpeg-turbo.
> >
> >Yonit.
> >>-Kai Meyer
> >
> 
> I'm using the spice client that comes in the default RHEL 6
> repositories. libjpeg-turbo is not installed as a system library
> anywhere I can find. If I am cpu-bound, it seems like it would be
> the qemu process running the VM. My spicec process does not utilize
> more than 50% of a cpu (as reported by top).

How many cores do you have? if 2, then 50% *is* cpu bound. You can use
htop for better reporting.

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