MongoDB vs MySQL test for creating and destroying 10000 records

gistfile1.rb

# MongoDB vs MySQL test for creating and destroying 10000 recordst.
# Was using faker gem to generate random text for body and content

# Code for Benchmark

  def self.do_bm
    Benchmark.bm do |x|
      x.report do
        10000.times do 
          self.create(:title => Faker::Lorem.sentence, :body => Faker::Lorem.paragraph(10))
        end
      end
      x.report do
        self.destroy_all
      end
    end
  end

# In the red corner Rails 3.2.6 with mysql2 gem
# It took 10 min to create 10k records with mysql and 10min to destroy them

#       user     system      total        real
#  27.260000   1.100000  28.360000 (628.253261)
#   9.900000   0.870000  10.770000 (632.666397)

# In the red corner Rails 3.2.6 with mongo_mapper
# It took 10 sec to create 10k records with mysql and 10sec to destroy them

#       user     system      total        real
#  10.020000   0.230000  10.250000 ( 10.337336)
#  12.110000   0.470000  12.580000 ( 12.856795)

# DEEEEEM