Hi, After reading documentation, I follow that NO_HZ_FULL turns off the scheduling-clock interrupt on all except the boot CPU, where as NO_HZ_IDLE turns it off on all idle CPUs. I understand the period scheduling-clock interrupt is required to compensate for hardware oscillator drift. I believe that's why NO_HZ_FULL keeps it ON on atleast one CPU. That way the drift is compensated for. But, with NO_HZ_IDLE, all CPUs turn off interrupt during idle. Then how is the drift accounted for? CC'ing Paul as well for any guidance, thanks :) Regards, -Joel -- 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
