gistfile1.txt

$ cat bm.rb
require './env'

Benchmark.bm do |x|
  x.report('block') { OrderEvent.all.limit(100_000).map(&:total) }
  x.report('sym') { OrderEvent.all.limit(100_000).map(:total) }
end

$ ruby bm.rb
       user     system      total        real
block 10.490000   0.240000  10.730000 ( 10.810376)
sym  2.490000   0.060000   2.550000 (  2.759671)