+| | # TRex needs a warmup to avoid unsent packets at half-max rate.
+| | Send traffic on tg
+| | ... | duration=1.0
+| | ... | rate=${max_rate}
+| | ... | frame_size=${frame_size}
+| | ... | traffic_profile=${traffic_profile}
+| | ... | async_call=${False}
+| | ... | duration_limit=${1.0}
+| | ... | ppta=${ppta}
+| | ... | traffic_directions=${traffic_directions}
+| | ... | transaction_duration=${transaction_duration}
+| | ... | transaction_scale=${transaction_scale}
+| | ... | transaction_type=${transaction_type}
+| | ... | use_latency=False
+| | ... | ramp_up_duration=${0.0}
+| | ... | ramp_up_rate=${0.0}
+| | # Ready for main search.