You are working for a clothing retailer that has big stores in many cities. Your TAS, for the first time, been just been used for reliability and stress testing of the overnight batch processing…

You are working for a clothing retailer that has big stores in many cities. Your TAS, for the first time, been just been used for reliability and stress testing of the overnight batch processing that collects sales transactions from the stores and adds them to a data warehouse; functional suitability tests have been re-used for these runs. All tests have finished normally but their results have not been satisfactory; and it has been difficult to understand the nature of the defect or defects that have been causing the failures. What data, if added to the test logs, would MOST likely help with debugging in this situation?