README.md

RTAI Tests

Collection of RTAI test results.

In the subfolders you can store test results files generated by makertaikernel.sh (the latencies-* files along with the corresponding kernel configurations config-*) as explained below. That way we can get an overview on what is possible with RTAI and which hardware has been used.

See the latencies-* files for complete test results, kernel parameter, CPU and hardware properties, kernel messages, etc. The kernel configurations are stored in the corresponding config-* files.

Instructions

1. Clone makertai and rtaitests into the same directory:

   git clone https://github.com/relacs/makertai
   git clone https://github.com/relacs/rtaitests
   

2. Make a directory for your latency test results. Idealy it should be named HOSTNAME-RTAIVERSION-LINUXKERNEL like the beginning of the latencyes-* file name:

   cd rtaitests
   mkdir HOSTNAME-RTAIVERSION-LINUXKERNEL
   

3. Copy latencies-* and the corresponding config-* files into this directory:

   cd /path/to/your/test/results
   cp latencies-* config-* /path/to/rtaitests/HOSTNAME-RTAIVERSION-LINUXKERNEL/
   

4. Copy from one of the other directories the report.sh file:

   cd /path/to/rtaitests
   cp OTHERTESTS/report.sh HOSTNAME-RTAIVERSION-LINUXKERNEL/
   cd HOSTNAME-RTAIVERSION-LINUXKERNEL/
   

5. Modify the report.sh script if necessary...

6. Run the report.sh script:

   ./report.sh
   

7. Update the test summary:

   cd ..
   python summary.py
   

8. Add your files to the git repository, commit and push:

   git add HOSTNAME-RTAIVERSION-LINUXKERNEL/
   git commit -a -m 'added test results for HOSTNAME-RTAIVERSION-LINUXKERNEL'
   git push origin master
   

Test results

Mean, standard deviation and the maximum value of the jitter (lat max - lat min) of the kern/latency tests in nanoseconds.

Click on the machine link for details.

machine	mean jitter	stdev	max
horse-rtai-5.2-4.4.176-2019	218	182	3680
abbott-rtai-5.1-4.4.115-2018	231	122	1713
mule-rtai-5.1-4.4.115-2018	252	196	4476