Count number of objects created per request

application_controller.rb

#app/controllers/application_controller.rb

around_filter :log_objects_creation




protected

def log_objects_creation
  started = ObjectSpace.count_objects[:T_OBJECT]
  yield
  elapsed = ObjectSpace.count_objects[:T_OBJECT] - started
  MemoryLogger.info("#{Time.now}| #{elapsed}| #{params}| #{current_user.nil? ? '' : current_user.id}") if elapsed > 2000
end

memory_logger.rb

#config/initializers/memory_logger.rb

MemoryLogger = Logger.new("#{Rails.root}/log/ruby_memory.log")