OB Execution Overheads
The time allocated to your program is total execution time, i.e., integration time + overheads. Therefore, the total execution time of the OBs you submit should be less than or equal to the total time allocated, with the only possible exception of Target of Opportunity runs. The option of submitting OBs for an execution time exceeding the allocation and terminating the programme when the allocation time is exceeded is not currently supported in Service Mode.
To determine total execution time, please use the P2PP Execution Time report function (Reports -> Execution Time from the P2PP tool main menu bar).