add memorylogic

app/logical/memorylogic.rb

@@ -0,0 +1,9 @@
+module Memorylogic
+  class << self
+    include ActionView::Helpers::NumberHelper
+  end
+
+  def self.memory_usage
+    number_to_human_size(`ps -o rss= -p #{Process.pid}`.to_i)
+  end
+end