RTlinux on Raspberry Pi?

Question

linux

Good day, can anyone help in mastering the RTOS on Raspberry, by googling I came across RTLinux, but I didn’t find any clear installation tutorials and examples, who can help? I will be glad to links and literature

Answer 1

Perhaps for your purpose it will be enough to rebuild the kernel with CONFIG_PREEMPT_RT ,
but not - to add the appropriate patch. According to our tests, it turned out very well.
PS. Here it seems to be collected for raspberries: https://emlid.com/raspberry-pi-real-time-kernel/

Answer 2

Wow, you don't need it (RTlinux)! Moreover, it has not been developed for 10-15 years.
Moreover, when, back in 1999, they tested the real-time functionality of Linux in different versions, comparing them with real RTOS, they did not find any differences between the standard RT functions of the kernel, various RT extensions, and most of the functionality of commercial RTOS! Here is my heavily cut article of that time - www.osp.ru/os/1999/09-10/177813
For commercial reasons, all tests, references and comparisons with commercial RTOS were thrown out of it (I still won’t name them for ethical reasons).
In general, I just recommend using a standard scheduler and not worrying. Well, if not enough, if there are still a bunch of specialized schedulers, sharpened on RV, in different variations.
If everything is needed in a commercial sense, then there are a bunch of distributions, such as MontaVista Linux, optimized for very serious tasks, with doped schedulers, their own stacks and IPC.