I have been looking at the linux scheduler ( mostly to understand it ... ) and fiddling with sched_mc and assymetric packing. I had the thought of using packing in a scheduler domain to bias rt to one end and regular tasks to the other. Possibly using using overcommit on userland ..... If packing on scheduler domains is working properly it wouldn't be too hard. An other option would be to bias userland to the higher numbered scheduling groups, and keep interrupts and timers on the lower one. Do you think it would be worh a shot ? / regards, Lars Segerlund. -- 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