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IPerf 3 was sending at low packet rates (~40K pps) in initial iPerf3 testing - this means we are only capturing BIG interrupts with this stream (see sample output below).
With DPDK operating In future, using DPDK to operate at higher rates , and buffer size set on per packet basis - , traffic will fill the buffers more easily. T-rex generator can only achieve about 5 Gbps (based on recent testing, with T-rex core assignment = 4 cores in current configurations).
URL to PROX tool, which can examine interrupt effects on a heartbeat on each core: https://github.com/opnfv/samplevnf/tree/master/VNFs/DPPD-PROX/
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