trying 2000 iterations read thread 1084782912 start write thread 1093175616 start write thread 1093175616 stop read thread 1084782912 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.12system 0:12.24elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+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 32inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.09system 0:07.19elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+397minor)pagefaults 0swaps 0.14user 1.14system 0:02.89elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k 2688inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.10user 1.19system 0:02.71elapsed 47%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.12user 1.10system 0:02.82elapsed 43%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.11user 1.18system 0:02.17elapsed 59%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.07system 0:07.94elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+136minor)pagefaults 0swaps 1.72user 2.24system 0:17.33elapsed 22%CPU (0avgtext+0avgdata 0maxresident)k 321504inputs+409600outputs (1599major+24187minor)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 1.64system 2:23.21elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+2560008outputs (0major+475minor)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... 2.25user 22.16system 1:04.25elapsed 38%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+5242968outputs (0major+164424minor)pagefaults 0swaps 0.00user 1.00system 0:02.78elapsed 35%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.44user 10.08system 0:11.54elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.22elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.11elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps