HI, When fio is run with blktrace, IOPS drops by 8%, average clat increased by 9% and max clat is5 times more compared to the test run without running blktrace. Is this expected overhead when blktrace is run? Wondering why max latency is 5 time more!! Regards, Gruu -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html