Monitor how many ROBs were requested by ROS per data request.
The Cost table will display then % of the requests that were full (requested all ROBs from ROS)
example for run 430702, 200 events https://atlas-trig-cost.web.cern.ch/?dir=aporeba&type=&tag=n-robs-per-ros&run=00430702&range=LumiBlock_00100&level=HLT&summary=ROS