Method and device for adjusting clock interrupt cycle

Abstract

The present invention relates to a method and an apparatus for adjusting a period of clock interruption. The method comprises: determining a number of processes in a run-queue of a processor; and determining the period of clock interruption for use in a run state of the processor such that the period of clock interruption for use when the number of the processes is greater than a reference threshold is less than the period of clock interruption for use when the number of the processes is not greater than the reference threshold. The apparatus comprises a first determination block and a second determination block. With the method and apparatus according to the embodiment of the invention, it is possible to dynamically adjust the period of clock interruption such that the period of clock interruption for use in the run state of the processor can be changed according to needs with flexibility. When a shorter period of clock interruption is used for a relatively large number of processes, it is possible to increase the response speed. When a longer period of clock interruption is used for a relatively small number of processes, it is possible to reduce overhead and enable sufficient execution of processes. As a result, the processing efficiency of the system can be improved.

Description

technical field [0001] The invention relates to the field of system management, more specifically, to a method and a device for adjusting a clock interruption period in the field of system management. Background technique [0002] The clock interrupt is the driver of the operating system, which 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 a timely manner, making the system have better interactivity and response speed. However, when the clock tick rate is increased, the kernel overhead is increased, which affects the performance of the operating system, and may prevent some processes with a large amount of calculation from being processed in time. Therefore, it is very important to choose an appropriate clock tick rate for the op...

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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