Method and device for adjusting clock interrupt cycle

Abstract

The embodiment of the invention provides a method and device for adjusting a clock interrupt cycle. The method comprises the following steps of: determining the number of processes in a running queue of a processor; and determining the clock interrupt cycle required to be used in the running status of the processor on the basis of the fact that a clock interrupt cycle required to be used when thenumber of processes is greater than a reference threshold is smaller than a clock interrupt cycle required to be used when the number of processes is not greater than the reference threshold. The device comprises a first determination module and a second determination module. By adopting the method and the device provided by the embodiment of the invention, the clock interrupt cycle can be adjusted dynamically, so that the clock interrupt cycle used in the running status of the processor is flexible, and different clock interrupt cycles can be used as required. Moreover, the response speed can be increased by using a smaller clock interrupt cycle when the number of processes is great, and the expense can be reduced and the processes can be fully executed by using a greater clock interruptcycle when the number of processes is small. Thus, the processing efficiency of the system can be increased.

Description

Technical field [0001] The present invention relates to the field of system management, and more specifically, to a method and device for adjusting the period of clock interruption in the field of system management. Background technique [0002] The clock interrupt is the driving force of the operating system and is related to the processing and scheduling of different tasks. The system uses clock interrupts to perform load statistics, process time statistics, and prompt process switching. A higher clock tick rate, that is, a smaller clock interruption period, can enable the process to be scheduled in time, so that the system has better interactivity and response speed. However, as the clock tick rate increases, the overhead of the kernel increases, which affects the performance of the operating system, and may make some computationally intensive processes not processed in time. Therefore, it is very important to choose an appropriate clock tick rate for the operating system. ...

AI Technical Summary

Problems solved by technology

Even if the tickless function of the dynamic clock mode is enabled in the system, when the processor enters the idle state, the system will change the clock interrupt period to infinity or a value large enough to stop the processor's clock interrupt, but when processing When the processor is in a non-idle running state, the processor still processes processes at a fixed clock interrupt cycle

[0004] The fixed clock interrupt period in the running state lacks flexibility, which may cause a series of problems such as affecting the scheduling speed of the process, reducing the response time of the system, or wasting hardware resources, which further affects the processing efficiency of the system.

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