Grant Edwards wrote:
I've been loaned a clue by somebody on the OSADL mailing list: the RT patches are for improving _user_space_ reponse, and may do so at the expense of both CPU usage and interrupt latency.
The RT patches improve *worst case* latency. They are primarily intended for applications that must *always* meet their deadlines, not merely most of the time. In return you tend to get increased average latency as well as reduced throughput.
As a result, I'm better off without the RT patch if what I care about is interrupt latency.
Yes, if you only care about *typical* interrupt latency but don't mind the occasional long delay.
Joachim -- joachima@xxxxxxxxxxxxxx http://www.netacquire.com -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
