I have a simple sip servlet application, based on this scenario:
and I deploy it on a servlet container like Mobicents. Now, I want to send requests from a client to this application and I'm gonna to do this by SIPp.
What I want to measure is the latency between the sending of INVITE(1) request and receiving the 200(8) response.
I want to know how the latency changes with the increasing the load per second.
How can I measure the latency(response time) to the load generated by the SIPp.
You can look at response times see http://sipp.sourceforge.net/doc/reference.html#Statistics.
FYI, Mobicents SIP Servlets already contains a number of performance examples see https://github.com/Mobicents/sip-servlets/tree/master/sip-servlets-test-suite/sipp-scenarios/performance (they may need a bit of cleanup though)