trying 2000 iterations read thread 1097288000 start write thread 1105680704 start write thread 1105680704 stop read thread 1097288000 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.12system 0:12.22elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 112inputs+7008outputs (0major+215minor)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 0:00.07elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.07system 0:07.08elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+397minor)pagefaults 0swaps 0.10user 1.05system 0:02.18elapsed 53%CPU (0avgtext+0avgdata 0maxresident)k 2728inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.12user 1.04system 0:02.06elapsed 56%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.09user 1.06system 0:02.33elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.14user 1.03system 0:02.02elapsed 58%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.10system 0:07.24elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+136minor)pagefaults 0swaps 4.18user 2.70system 0:15.80elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k 323080inputs+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 1.23system 2:23.33elapsed 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... 2.12user 20.46system 0:53.70elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164412minor)pagefaults 0swaps 0.00user 0.92system 0:02.21elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+192000outputs (0major+114minor)pagefaults 0swaps read_checkzero done 0.76user 9.04system 0:09.86elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 40inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.18elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.11elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps