[Freeswitch-users] TLS/SRTP performance numbers and bottlenecks?

[Aaron S]

I have an application that requires a large number (500-1000 to start) 
of concurrent g.711u streams/calls as seen in the Hybrid Encryption 
section at https://freeswitch.org/confluence/display/FREESWITCH/SIP+TLS. 
  Parallelizing this is something that's certainly possible (and would be 
used with two identical systems for redundancy's sake to start), but I'm 
wondering if two systems on bare metal would be sufficient, or more is 
required.

Looking for stats via google, I'm not seeing much out there.  I'm not 
sure where the bottlenecks of this system are.  I'm not doing any 
transcoding, just stripping out the encryption on one leg of the call.

Any tips, real-world numbers/experience, or what have you would be very 
appreciated.

Thanks,

-Aaron