#163 [Sipp-users]SIPp gets overloaded on handling media with multiple RTP sources

[tapark13357]

Hello,
I am testing a scenario of 2000 calls with SIPp with playing pcap for media, i am using rtpengines to send/receive media to/from sipp for the calls, plase find below my test cases and results

Dial 2000 calls from SIPp with single RTPEngine as the source for media to be sent/received to/from SIPPs
Result: The above scenario is working fine and media is verified.

Dial 2000 calls from SIPp with 2 RTPEngines as the source for media to be sent/received to/from SIPPs
Result: please find below the observations during the test,

SIPp gets overloaded
Start getting watchdog_minor and watchdog_major threshold warnings even just after 500-600 calls
as a result, the scenario screen gets stuck and sipp drops the sip/rtp packets, sometimes SIPp gets terminated.
Has anyone come across the same situation? Does anyone know the reason why the SIPPs are getting overloaded when we use more than 1 RTP source to send/receive media to/from SIPp?

Note: I have tested the above scenarios with SIPP-3.3, SIPP-3.6.0 and SIPP-3.6.2 with both TCP and UDP for SIP signaling, and observing the overload (with 2 Media Sources/RTPEngines) with all these sipp releases.

Thanks