dbfill.rb

require 'rubygems'
require 'mongo'

def rand_string(ary, len = 16)
  r = []
  len.times {r << ary[rand ary.length]}
  r.join("")
end

class PeriodicUpdater
  attr_accessor :interval
  
  def initialize(args = {})
    args.each {|k, v| send("#{k}=", v)}
    @last_update = Time.now
  end
  
  def check(subject)
    diff = Time.now - @last_update
    if diff > @interval
      puts subject
      @last_update = Time.now
    end
  end
end

pu = PeriodicUpdater.new(:interval => 5)
iterations = 10_000_000
db = Mongo::Connection.new("localhost").db("example_db")
coll = db.collection("example_collection")
chars = %w[q w e r t y u i o p a s d f g h j k l z x c v b n m Q W E R T Y U I O P A S D F G H J K L Z X C V B N M 1 2 3 4 5 6 7 8 9 0]

iterations.times do |i|
  pu.check "#{i}/#{iterations}"
  coll.insert({:foo => rand_string(chars, 1024), :bar => rand_string(chars, 1024),:baz => rand_string(chars, 1024)})
end