benchmark for loading all of fog vs just aws

benchs/load_times.rb

@@ -0,0 +1,31 @@
+require 'benchmark'
+$LOAD_PATH << File.dirname(__FILE__) + '/../lib'
+
+def time_in_fork(&block)
+  read, write = IO.pipe
+  Process.fork do
+    write.puts Benchmark.realtime{ block.call }
+  end
+  Process.wait
+  write.close
+  read.read.tap do
+    read.close
+  end
+end
+
+class Array
+  def avg
+    map(&:to_f).inject(:+) / size
+  end
+end
+
+def report(label, n = 10, &block)
+  puts label
+  puts "%.4f" % n.times.map{ time_in_fork &block }.avg
+  puts
+end
+
+N = 10
+
+report("require fog:", N)             { require 'fog' }
+report("require fog/aws:", N)         { require 'fog/aws' }