The format of the log is:
-client_id> transaction_no> time> file_no> time_epoch> time_us> schedule_lag
+client_id> transaction_no> time> script_no> time_epoch> time_us> schedule_lag
where time> is the total elapsed transaction time in microseconds,
- file_no> identifies which script file was used
- (useful when multiple scripts were specified with >),
+ script_no> identifies which script file was used (useful when
+ multiple scripts were specified with >),
and time_epoch>/time_us> are a
Unix epoch format time stamp and an offset
in microseconds (suitable for creating an ISO 8601