I don't have enough experience to speak with authority here. Just an observation from reading on lots of different implementations of stuff. There might be a ge

I don't have enough experience to speak with authority here. Just an observation from reading on lots of different implementations of stuff. There might be a general rule that gaining more determinism often trades away throughput or vice versa. I remember specific choices of algorithm where this was true. Your claim about hard, real-time GC's having performance degradation was also true for early ones. I know lots of people were focusing on improving performance, though. It's worth surveying the field again to see what the current losses are. And, as another person replied, it might not even matter at all or with a different choice of hardware.