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by snvzz
1572 days ago
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>Is RT Linux a good (or at least a good enough) option for realtime OS's Soft realtime, yes. It does keep scheduling latency under control, enabling e.g. pro audio with low latency (very small buffer). This is unlike without PREEMPT_RT, where with buffers under 20ms XRUNs happen frequently. Hard realtime, no. It can't guarantee a thing, as the kernel is complicated (has millions of lines of code) and thus unpredictable. Look at seL4 instead if your deadlines are hard. It has been designed for realtime, and comes with formal proofs of worst case execution time. |
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