RTLinux (real-time Linux) based real-time scheduling method for analog simulation of controlled object model

Abstract

The invention discloses an RTLinux (real-time Linux) based real-time scheduling method for analog simulation of a controlled object model. Periodical computational intensive tasks are utilized to participate in global scheduling in a low-priority form, rather than directly preempting sudden interactive tasks, when a period arrives. Therefore, interactive response time is shortened, and task loss rate is decreased; after raising time, the computational intensive tasks enter a high-priority queue bound with specific processors to participate in local scheduling, missing pages of the processors due to switching of the tasks between different processors are decreased, and scheduling delay is reduced, so that real-time performance in response of the computational intensive tasks is effectively improved, the interactive tasks and the computational intensive tasks can be executed concurrently, and performance of multi-ore processors is fully utilized.

Description

technical field [0001] The research on the real-time scheduling method of the simulated object model simulation based on RTLinux belongs to the field of scheduling performance of the real-time operating system, especially involves the key issues of model simulation calculation and the real-time response of the simulation signal monitoring task, especially a RTLinux-based The controlled object model simulation simulation real-time scheduling method. Background technique [0002] RTLinux (Real-Time Linux) is a real-time operating system developed on the basis of the Linux kernel by Victor Yodaiken of the School of Data Mining Technology, New Mexico University of Science and Technology, in order to improve the real-time performance of the system. It divides the system kernel into real-time kernel and original Linux kernel. Run real-time tasks on the real-time kernel, and the original Linux kernel runs ordinary jobs as a job with the lowest priority in the real-time kernel. Th...

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Problems solved by technology

[0003] With the rapid development of computer software and hardware, more and more dynamic simulation models run on multi-processor general-purpose machines. However, most of the mature real-time scheduling methods proposed in the RTLinux system are based on single-processor systems and cannot Take full advantage of the powerful parallel capabilities of multi-core processors

At the same time, in addition to the predictable periodic real-time computing tasks in most simulation model systems, there are also a large number of unpredictable non-periodic interactive tasks

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