On Wed, Sep 22, 2010 at 4:43 PM, Talbot, Peter
<[email protected]> wrote:
> In further pursuing a ‘Production Rollout’ ready implementation of sipXecs,
> I had some final questions, mostly in regards to what can and cannot be
> Virtualized. Currently it is looking like anything that actually handles
> voice traffic (whether recorded messages or ongoing conversations) should
> remain physical due to timing constraints, but other Roles can be
> Virtualized.

At cluecon, Anthony M. showed a way to start freeswitch (in sipxecs
this menas AA, and VM) in a mode that attempts to compensate for the
inaccuracy of the timers typical on vms.  This showed calls that
slowly degraded in performance as the load increased rather than
choppy after first few calls.   With out without this mode, a single
call on a vm always sounded fine and often tricks people into thinking
that there is no difference between vm and physical.

As a point of reference, on physical hardware, without this timer
compensation, you get more of a hockey-stick curve in degradation
which is obviously the preferred response.

I cannot seem to find any information on the wiki, but maybe someone
can ask FS mailing list or dig around their archives.

On that note, if anyone has sipp load scripts or sipp experience they
can share to build a good platform to analyse this better, please let
me know.
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