Neon (Heroku, US-West)
puts Benchmark.measure { ActiveRecord::Base.connection.execute('select 1') }
0.000000 0.000000 0.000000 ( 0.013791)
RDS (AWS, US-West)
puts Benchmark.measure { ActiveRecord::Base.connection.execute('select 1') }
0.000374 0.000145 0.000519 ( 0.001340)