When I saw the thread about virtualization a few weeks, I got really
excited about Xen and the PCI pass through feature (I was planning to
use a Sangoma T1/PRI card). So, in my ignorance, I put together a
Citrix XenServer and installed asterisk 1.6.2.6 on a virtual machine.
To my disappointment, I learned that XenServer doesn't support PCI
pass through. Also, the asterisk is performing poorly, especially the
conference bridge that I am running on it (not a heavily used bridge,
something like 5-10 connections once or twice a day). For the PSTN
connectivity I was using a Cisco 2811 router instead of the Sangoma
card.
I will eventually migrate back to a physical machine, this setup was
only temporary while I rebuild the OS on it and reinstall the Sangoma
driver.

Liviu

On Tue, Mar 30, 2010 at 5:28 PM, David Cook <[email protected]> wrote:
> People on this list have expressed opinions before regarding Xen vs. VMware
> and full/paravirtualization before. I picked up a small test machine to
> evaluate some new stuff and this was on my list.
>
> I had some surprising findings and I'm not sure if they were normal or I
> have missed the boat on something.
>
> Do people find Xen typically perform poorer on full virtualization than
> VMware 2 (my findings)? Or am I just noob enough to have missed something on
> the learning curve?
>
> Does Xen's performance on paraviruatlized linux clients outstrip it's
> deficiencies in full virtualization or is the main drawing card that it can
> access PCI devices within a VM?
>
> Objective opinions really welcomed!
>
> - dbc.
>
>
>
>

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