I know that
iotop lets me measure the disk bandwidth used by any or all processes in real time.
iotop -a measures the accumulated disk bandwidth, which is closer to what I want.
However, when the process I run terminates, it disappears too soon in iotop for me to be able to see exactly how many I/Os the process used in total since it started. Is there a way to record the total I/O usage of a process when it ends, and perhaps have this saved to some file for further analysis?
Note that I am only looking for answers exclusive to Linux, specifically Ubuntu.