Frankly I dont mind big images or big data , neither I share the obsession to shrink things down to few mbs in a time that we are talking in TBs .

I was wondering whether it would worth the effort beyond the unit tests that check for behaviour of the code to have also benchmark tests that will have to pass specific standards so that specific method must perform under a strict timetable specific tasks, this way CI may alert not only unit tests that fail but also benchmarks that fail , automagically.