http://www.kernel.org/doc/man-pages/online/pages/man2/timer_create.2.html There is an example which demonstrate the use of timer_create(). I believe the line: ./a.out 1 10 should be ./a.out 1 100 According to the description, the overrun count and the code, the timer frequency should be 100 nanoseconds. -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html