[RTAS19] Job-Class-Level Fixed Priority Scheduling of Weakly-Hard Real-Time Systems

Directory layout

.
├── analysis                # Schedulability analysis written in C
├── data                    # Sample data file (txt) for schedulability test
├── rpi_jcls                # JCLS implementation on Linux kernel v4.19
├── taskset_generation      # Taskset generation code in matlab
└── README.md

1. Analysis

• Source codes for schedulability test under JCLS
• Build source codes

  make
  

• Run the sample data (sample data files are in /data folder)

  (Usage)>> ./check_sched filename.txt num_tasksets num_util_range filename_num.txt num_cpu
  (Example)>> ./check_sched data_40.txt 1000 11 data_40_num.txt 1
  

2. taskset_generation

• Taskset generation for schedulability test (written in matlab)
• Run main_script.m to generate a sample taskset

3. rpi_jcls

• Implementation of JCLS based on Linux kernel v4.19
• Tested on raspberry Pi 3 Model B

Sub folder layout

rpi_jcls/
├── app                # Example for running JCLS
├── kernel             # Syscall definitions
└── modules            # Loadable kernel modules

NOTE: Please reference our JCLS paper that was published in RTAS 2019.

@inproceedings{choi2019job,
  title={Job-class-level fixed priority scheduling of weakly-hard real-time systems},
  author={Choi, Hyunjong and Kim, Hyoseung and Zhu, Qi},
  booktitle={2019 IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS)},
  pages={241--253},
  year={2019},
  organization={IEEE}
}

@article{choi2021toward,
  title={Toward Practical Weakly Hard Real-Time Systems: A Job-Class-Level Scheduling Approach},
  author={Choi, Hyunjong and Kim, Hyoseung and Zhu, Qi},
  journal={IEEE Internet of Things Journal},
  volume={8},
  number={8},
  pages={6692--6708},
  year={2021},
  publisher={IEEE}
}