Show director with the largest number of show times in total.
SELECT T2.directed_by FROM schedule AS T1 JOIN film AS T2 ON T1.film_id  =  T2.film_id GROUP BY T2.directed_by ORDER BY sum(T1.show_times_per_day) DESC LIMIT 1
SELECT T2.directed_by FROM schedule AS T1 JOIN film AS T2 ON T1.film_id  =  T2.film_id GROUP BY T2.directed_by ORDER BY sum(T1.show_times_per_day) DESC LIMIT 1
[{'Directed_by': 'Bill Schreiner'}]