Hi, I am using SIPp to perform a simple experiment. Two nodes, each running SIPp instance, one as a client (uac scenario) and other as a server (uas scenario). I am increasing call rate from 100 to 4000 requests per second and I see some failed calls due to UDP retransmissions. I do not see either of network bandwidth, memory or CPU (not even a single core) reaching to their limits though packets are still getting dropped. Here [1] is the sipp docker image I am using. Any ideas of what could cause UDP retransmissions?
Thanks Aman Mangal http://www.cc.gatech.edu/~amangal7/ [1] https://hub.docker.com/r/mangalaman93/sipp/
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