def print_stats
      fmh = " %-20s | %10s | %5s | %6s | %6s | %6s | %-20s\n"
      fmt = " %-20s | %10.3f | %5i | %6.3f | %6.3f | %6.3f | %s\n"
      head = sprintf(fmh, 
                     "class", "total", "count", "min", "max", "avg", "callers")
      line = "-" * head.length  
      puts line
      print head
      puts line
      @loading_stats.sort_by { |key, val| 
        val[:total_time] 
      }.reverse.each { |key, val|
        key = key.to_s
        if(key.length > 20)
          key = key[-20,20]
        end
        avg = val[:total_time] / val[:count]
        printf(fmt, key, val[:total_time], val[:count],
               val[:times].min, val[:times].max, avg,
               val[:callers].join(','))
      }
      puts line
      $stdout.flush
    end
def print_stats
      fmh = " %-20s | %10s | %5s | %6s | %6s | %6s | %-20s\n"
      fmt = " %-20s | %10.3f | %5i | %6.3f | %6.3f | %6.3f | %s\n"
      head = sprintf(fmh, 
                     "class", "total", "count", "min", "max", "avg", "callers")
      line = "-" * head.length  
      puts line
      print head
      puts line
      @loading_stats.sort_by { |key, val| 
        val[:total_time] 
      }.reverse.each { |key, val|
        key = key.to_s
        if(key.length > 20)
          key = key[-20,20]
        end
        avg = val[:total_time] / val[:count]
        printf(fmt, key, val[:total_time], val[:count],
               val[:times].min, val[:times].max, avg,
               val[:callers].join(','))
      }
      puts line
      $stdout.flush
    end
prints loading statistics to $stdout