trying 2000 iterations read thread 1086253376 start write thread 1094646080 start write thread 1094646080 stop read thread 1086253376 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.10system 0:12.28elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 96inputs+7008outputs (0major+213minor)pagefaults 0swaps Pass: faulty sync/aio dio writes give EFAULT and don't write garbage Command exited with non-zero status 2 0.00user 0.00system 0:00.08elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.09system 0:08.72elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+397minor)pagefaults 0swaps 0.11user 1.04system 0:03.61elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k 2752inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.08user 1.04system 0:03.82elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.11user 1.01system 0:04.04elapsed 28%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.08user 1.10system 0:03.66elapsed 32%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.06system 0:08.33elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+135minor)pagefaults 0swaps 5.16user 2.91system 0:19.70elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k 320504inputs+409600outputs (1599major+24184minor)pagefaults 0swaps dio_truncate: child reading file parent loop # 0 parent loop # 1 parent loop # 2 parent loop # 3 parent loop # 4 parent loop # 5 parent loop # 6 parent loop # 7 parent loop # 8 parent loop # 9 0.00user 1.54system 2:57.41elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+474minor)pagefaults 0swaps num_passes set to 10 Pass 1... num_passes set to 10 Pass 1... Pass 2... num_passes set to 10 Pass 1... Pass 2... Pass 3... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... num_passes set to 10 Pass 1... Pass 2... Pass 3... Pass 4... Pass 5... Pass 6... Pass 7... Pass 8... Pass 9... Pass 10... 2.20user 20.72system 1:35.70elapsed 23%CPU (0avgtext+0avgdata 0maxresident)k 196632inputs+5242968outputs (0major+164424minor)pagefaults 0swaps 0.00user 0.89system 0:03.71elapsed 24%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 0.28user 11.37system 0:11.71elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.21elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.12elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+239minor)pagefaults 0swaps