Hi to all, Sorry for my poor english. 1) What are reliable clocksources? 2) I have a mainboard with a 500 Mhz cpu which works perfectly with RT. I suppose that the max resolution is 2 ns for the high resolution timers but a "cat /proc/timer_list" reported: cpu: 0 clock 0: .index: 0 .resolution: 1 nsecs <---- active timers: clock 1: .index: 1 .resolution: 1 nsecs <---- How it is possible that this mainboard have 1 nsecs resolution? Excuse me if it are stupid questions. Thanks in advance! Ciao, Alessio - 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