An object of the present invention is to provide a method for manufacturing a multi-stage compression type rotary compressor which can avoid the replacement of parts to be used as much as possible to reduce costs and also which enables easily setting an appropriate displacement volume ratio while preventing the compressor from being increased in size. Processor activity can be analyzed to determine an amount of processor resources used to execute the various functions, modules, and processes associated with a tested software activity. The current mirror includes a second transistor having a gate connected to the data line and one of the source and the drain of the first transistor; and a third transistor having a gate coupled to the other of the source and the drain of the first transistor. The notification unit notifies, as a response to the determination of the insufficient state by the determination unit, the gist thereof to a user.