I don't know, concurrency is still on the table, especially that the OS also has timing events. Say, a compiler uses multiple threads and even if you assign so

I don't know, concurrency is still on the table, especially that the OS also has timing events. Say, a compiler uses multiple threads and even if you assign some fixed amount of fuel to each thread, and mandate that after n instructions, thread-2 must follow for another n, how would that work with, say, a kernel interrupt? Would that be emulated completely only at given fixed times? But I do like the idea of running multiple builds in parallel to not take as big of a hit from single-threaded builds, though it would only increase throughput not latency.