./execute_cmp.pl 100 1000 100
Benchmark: timing 100 iterations of SQLite_new, SQLite_old...
SQLite_new: 15 wallclock secs (15.27 usr +  0.07 sys = 15.34 CPU) @  6.52/s (n=100)
SQLite_old:  5 wallclock secs ( 5.91 usr +  0.03 sys =  5.94 CPU) @ 16.84/s (n=100)
Benchmark: timing 100 iterations of PostgreSQL_new, PostgreSQL_old...
PostgreSQL_new: 66 wallclock secs (26.55 usr +  1.75 sys = 28.30 CPU) @  3.53/s (n=100)
PostgreSQL_old: 37 wallclock secs ( 7.67 usr +  1.14 sys =  8.81 CPU) @ 11.35/s (n=100)
Benchmark: timing 100 iterations of MySQL_new, MySQL_old...
 MySQL_new: 58 wallclock secs (26.45 usr +  1.43 sys = 27.88 CPU) @  3.59/s (n=100)
 MySQL_old: 30 wallclock secs ( 8.09 usr +  0.85 sys =  8.94 CPU) @ 11.19/s (n=100)