An operating system clock scheduling method and system

Abstract

The present invention discloses an operating system clock scheduling method and system. The embodiment of the present invention determines that the priority of the current running process is higher than or equal to the set focus priority when determining the active scheduling of the current running process of the operating system of the device. When it is judged that the current time of the operating system of the device is greater than the sum of the last clock interrupt trigger time of the operating system of the device and the clock interrupt scheduling cycle time, the clock interrupt is directly triggered and the pending interrupt event is executed. It can be seen that, in order to prevent frequent judgments and trigger clock interrupts, and prevent reduction of operating system performance of the device, the above solution is executed only when the priority of the currently running process is higher than or equal to the set concern priority for triggering clock interrupts. In this way, the method and system provided by the embodiments of the present invention can accurately determine the time of triggering the clock interrupt, and improve the real-time performance of real-time process switching.

Description

technical field [0001] The present invention relates to the technical field of operating system execution of equipment, in particular to an operating system clock scheduling method and system. Background technique [0002] Devices such as computers or embedded devices are usually composed of hardware parts and software parts, and are devices that can operate independently and perform various functions. Wherein, the software part of the device includes a software operating environment and its operating system, and the hardware part includes hardware units such as a processor, a memory, and a communication module. The device with the above structure is widely used in daily life, industrial control, aerospace and military affairs. [0003] Usually, the device uses an open source operating system, such as a Linux system, to manage and control hardware resources and software resources in the device. The operating system of the device implements the operation of the software pro...

AI Technical Summary

Problems solved by technology

The interval between triggering two clock interrupts is longer, and the running time of the pending interrupt event in the device will be longer, and the real-time process cannot be switched for a longer time, resulting in poor real-time performance of the operating system of the device

[0012] In the case of periodic clock scheduling, the triggering of clock interrupts is more frequent, and the probability of real-time process switching affecting the operating system of the device is also greater.

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