I was wondering recently about RTEMS. Why is this Real-Time Operating System (RTOS) widely use in the European space industry among other suitable alternatives like freeRTOS or VxWorks?
Is this RTOS certified like SafeRTOS for instance?
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2$\begingroup$ This is (a part) of what "Qualification" means. We have done this for RTEMS, and continue to do so as the Operating System evolves and accumulates more and more functionality $\endgroup$ – JCRM Mar 21 '20 at 19:22
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3$\begingroup$ I suspect support of the LEON processor may be a factor. $\endgroup$ – JCRM Mar 21 '20 at 19:31
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1$\begingroup$ Indeed, according to (en.wikipedia.org/wiki/Comparison_of_real-time_operating_systems), VxWorks only supports "ARM, IA-32, Intel 64, MIPS, PowerPC, SH-4, StrongARM, xScale", whereas RTEMS supports "ARM, Blackfin, ColdFire, TI C3x/C4x, H8/300, x86, 68k, Milkymist SoC, MIPS, Nios II, PowerPC, SuperH, SPARC, ERC32, LEON, Mongoose-V". Also, RTEMS is open source, making it much easier to verify and customize. I sadly can't find an actual answer to your question, but that might be a good starting point. $\endgroup$ – Justin W Mar 26 '20 at 15:51
