[SR-Users] Performance Testing Kamailio 5.1 as SIP300 LCR on AWS - Recommendation on Tools and Methods

[KamDev Essa]

I am currently setup with Kamailio 5.1 on an AWS t2.micro as a SIP300 LCR solution with a http_query call to an external resource (c# .NetCore app for LRN dip and MySQL Route choices) to get the contacts string, tag it to the Contact header an send 300. 
Its been a while since I have performance tested on SIP and It was SIPp.   
   - Is http_query a bad choice for performance. Is KEMI better?
   - Are there any better free apps than SIPp?
   - Has anyone got cps stats for a SIP300 only Kamailio instance on AWS
   - Is AWS a bad choice for prime time LCR. Any gory stories? 
KD   
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