INFORMATION-PROCESSING DEVICE, PROCESSING METHOD THEREOF, AND INPUT/OUTPUT DEVICE

摘要

An information processing device for reducing the number of times of interrupt notification for notifying completion of execution of input/output instruction and lightening a load of interrupt processing is described. The information processing device prescribes that a driver checks a completion state of a preceding input/output instruction after issuance of the input/output instruction. An issuing timing of the input/output instruction is considered to be a polling timing for checking the completion state of the preceding input/output instruction. Before the input/output device transmits interrupt notification to a CPU, the input/output device sets a timer to stand by for a prescribed time. A processing unit which resets the timer and extends the standby time by a prescribed time in a case where notification that a subsequent input/output instruction is issued arrives from a driver to the input/output device during the time is additionally provided to the input/output device.

主权项

1. An information processing device having a processor, a storage unit, and an input/output device which receives an instruction of processing from the processor,
wherein the information-processing device checks based on the instruction from the processor whether a preceding process is completed at the time of processing instruction from the processor, and wherein the input/output device includes: an interrupt notification transmission unit which transmits an interrupt signal as notification of processing completion to the processor; a standby unit which allows transmission of notification of the processing completion to the processor to be on standby for a certain time; and an extending unit which further extends the certain time when the transmission to the processor is allowed to be on standby in a chance of detecting a processing start instruction from the processor.