mongo-ruby-driver/bench/gridstore_benchmark

#!/usr/bin/env ruby
require 'rubygems'
require 'mongo'

include Mongo

db = Connection.new['benchmark-gridfs']
sample_data = File.open(File.join(File.dirname(__FILE__), 'sample_file.pdf'), 'r').read
db['fs.files'].remove
db['fs.chunks'].remove

T      = 5
length = sample_data.length
mb     = T * length / 1048576.0

@grid = Grid.new(db)
@grid_file_system = GridFileSystem.new(db)

t1 = Time.now
ids = []
T.times do |n|
  ids << @grid.put(sample_data, :filename => "mongodb-new-#{n}.pdf")
end
puts "Grid Write: #{mb / (Time.now - t1)} mb/s"

t1 = Time.now
T.times do |n|
  @grid_file_system.open("mongodb.pdf-#{n}", 'w') do |f|
    f.write(sample_data)
  end
end
puts "GridFileSystem Write: #{mb / (Time.now - t1)} mb/s"

t1 = Time.now
T.times do |n|
  data = @grid.get(ids[n]).read
end
puts "Grid Read: #{mb / (Time.now - t1)} mb/s"

t1 = Time.now
T.times do |n|
  old_data = @grid_file_system.open("mongodb.pdf-#{n}", 'r') do |f|
    f.read
  end
end
puts "GridFileSystem Read: #{mb / (Time.now - t1)} mb/s"