# File lib/mongo/util/pool.rb, line 117
    def inspect
      "#<Mongo::Pool:0x#{self.object_id.to_s(16)} @host=#{@host} @port=#{port} " +
        "@ping_time=#{@ping_time} #{@checked_out.size}/#{@size} sockets available " +
        "up=#{!closed?}>"
    end