On 31 March 2017 at 18:34, Tarek <cashew250@xxxxxxxxx> wrote: > As an aside to the thread I have going about 0 clat min > > Why am I seeing udev events in the BTT summary? Why is systemd-udevd > generating anything when fio is ran? > > Q2C MIN AVG MAX N > --------------- ------------- ------------- ------------- ----------- > fio 0.000017381 0.000018851 0.000077907 436012 > systemd-udevd 0.000012019 0.000150024 0.000481010 76 Ulp, you dropped the CC to the mailing list so this disappeared into a different mailbox that I didn't see until now. Please send fio questions to the fio mailing list rather than only me directly. Thanks! I'm not sure but perhaps you "inserted" the disk afresh or changed the sectors where a partition table lives? It could be the case this can trigger other tools to initiate a rescan to see if new partitions have arrived and other tasks in turn need to be triggered... -- Sitsofe | http://sucs.org/~sits/ -- 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