Process scheduling method and device for preventing screen jam of user interface in operating system

Abstract

The invention discloses a process scheduling method and a process scheduling device for preventing the screen jam of a user interface in an operating system. The method comprises the following steps of: 1) setting a first threshold value; 2) determining a central processing unit (CPU) resource occupancy rate, and executing a step 3) when the current CPU occupancy rate of the operating system is more than the first threshold value; 3) acquiring user-oriented experience processes, namely taking the processes corresponding to a program which is in the top-level window of the user interface currently, a program which has an input focus window, and other user-concerned programs as the user-oriented experience processes; and 4) adjusting the user-oriented experience processes, namely improving the relative priorities of the user-oriented experience processes in operating system task scheduling. The device comprises a task scheduler (1), a main engine (2), and a kernel information detector (3), a priority follower (4), a preset program configurator (5) and a window process correlating device (6) which are connected with the main engine (2) respectively. The invention has the advantages of smooth user experience, fair and rational resource allocation, low software overhead and wide application range.

Description

technical field [0001] The invention relates to a process scheduling mechanism in an operating system, and in particular to a process scheduling method and device for preventing user-oriented processes from being stuck when the operating system is busy. Background technique [0002] Current terminal intelligent devices, especially personal computers, generally run an operating system that is good at multimedia information processing, and all input and output are completed in the form of intuitive graphics windows. When the computer is in a busy state due to a large number of jobs, it often causes a slow response to the user. The intuitive manifestation is that the refreshing of the graphic components is slower than people's habits or expectations, which is the so-called "stuck screen". For example, the cursor of the mouse does not move casually and presents a continuous displacement, but jumps intermittently on the screen; the task window cannot be transferred to the top of ...

AI Technical Summary

Problems solved by technology

In most of the current operating systems, all the programs executed by the user and the graphics service program of the system run with the same system default priority, and the system gives them the same chance to run. When the system is heavily loaded due to the number of tasks , the absolute CPU time for "user experience" related tasks will also be reduced, resulting in slow user response or audio and video output

However, this is not an easy problem to solve in general operating systems. There are several main reasons: operating systems and applications are provided by different manufacturers, and it is difficult to predict which applications are of concern to users; graphics services and operating system kernels are separated. Yes, the user of the graphics service and the graphics service may also be loosely coupled, and it is difficult for the kernel to know which task the current user is operating; some tasks, such as audio / video players, even if the user does not perform any operations on it, they also care about its output quality

[0004] With the advent of the information age, more and more smart devices will appear in all aspects of production and life. The phenomenon of stuck process facing users has seriously affected the friendly interaction of the man-machine interface of the operating system and reduced the man-machine interface. Operational efficiency has become a key technical issue to be solved

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