System and method for testing interrupt response time of linux real-time operating system

Abstract

The invention belongs to the technical field of information processing, and discloses a linux real-time operating system interrupt response time testing system and method, which transmits test parameters to application programs, and the test parameters include: test interval and test duration; the test application controls the drive in the kernel according to the setting Send an interrupt to the target CPU, block and wait for the driver to complete a test. The driver will wake up the test task and return the test result after completing the test. The interrupt number irq and the corresponding interrupt processing function handler are registered to the target test system, and a kernel thread is created to monitor whether the interrupt processing is completed. The test of the present invention is simple and efficient, and is closer to the real application environment; complex external auxiliary equipment can be removed, manpower time is saved, test efficiency is improved, and equipment resources are saved.

Description

technical field [0001] The invention belongs to the technical field of information processing, in particular to a system and method for testing interrupt response time of a Linux real-time operating system. Background technique [0002] Currently, the closest prior art: real-time systems fall into two categories: soft real-time systems and hard real-time systems. Hard real-time systems are widely used in aerospace, industrial automation, numerical control processing and medical equipment, etc., which require high real-time performance of the operating system. If there is an error in the system, it will bring heavy losses or unpredictable consequences. As a general-purpose operating system, linux did not consider the real-time nature of the system at the beginning of its design, so it cannot meet the requirements of hard real-time applications. However, based on the advantages of open source, small size, tailorable, and easy development of the linux kernel, people have carri...

AI Technical Summary

Problems solved by technology

[0007] (1) The traditional interrupt response test requires the assistance of oscilloscopes, signal generators and other equipment, and the operation is complicated. Each test requires the participation of equipment operators, each measurement takes a long time, and human records are required.

[0008] (2) Traditional test test data cannot be saved and cannot be continuously tested for a long time, resulting in the inability to correctly evaluate the hard real-time performance of the system

Images