[OpenSIPS-Users] RTPProxy on virtual machine

[Jeff Pyle]

I have an application in use today with rtpproxy inside a VMWare 5 pod 
on Debian Squeeze 32-bit as the guest OS.  It works well, but there does 
seem to be a heavy "virtualization penalty" compared to running on bare 
metal, or perhaps even Xen.

Each core of our VMWare pod is a "Intel(R) Xeon(R) CPU E5-2660 0 @ 
2.20GHz" so says to /proc/cpuinfo.  Each G711 call occupies about 22 MHz 
of CPU according to the vCenter stats over time.  We tried jiggling 
every handle VMWare has to see if we could squeak more efficiency, and 
this was the best we could come up with.  We had started with a 64-bit 
guest but the efficiency was the same and RAM consumption was higher.

I also run rtpproxy on an embedded AMD Geode platform (Alix).  Here the 
consumption is about 11 MHz per G711 call.  Interesting, eh?

I suspect rtpproxy would be more efficient in a fully paravirtualized 
Xen environment.  It seems the linux kernel understands more about its 
situation as a guest inside Xen, and hopefully that would boost the 
interrupt handling performance.

Regardless of the hypervisor rtpproxy seems to do just fine.  In our 
VMWare-based one I did spawn multiple rtpproxy processes to match the 
number of virtual cores I had assigned to the guest.  This gives an 
obvious maximum throughput boost, and I'm hoping it also allows the 
hypervisor to spread the guest's load a bit more smoothly.  But I 
suppose it's just as likely I'm full of it there.  Either way, it seems 
to work well.


- Jeff

> Ignacio Gonzalez <mailto:mylaneza at gmail.com>
> November 16, 2012 5:45 PM
> Thanks for the answer, i am testing it with VMWare and it works.
>
>
>
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> Adrian Serafini <mailto:wealwildwon at wombit.com>
> November 15, 2012 11:52 AM
> It works on XEN.  It's a good test environment.
>
> Adrian
>
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> Ignacio Gonzalez <mailto:mylaneza at gmail.com>
> November 15, 2012 11:24 AM
> Can rtpproxy run on a virtual machine?
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