What latency is needed in a RTOS?

Bresco · 2008-11-23T18:58:56+00:00

I just read that Linux with the RT patch can get latencies as low as 10uS, whilst a 'real' RTOS can get latencies down to 0.1uS.For safety critical systems (i.e. ABS braking system) or factory automation (where the latency directly influences the throughput ) I'd probably opt for the lowest latency but there are plenty of systems where latencies can be higher.Or is a lower latency always best?