trying 2000 iterations read thread 1102788928 start write thread 1111181632 start write thread 1111181632 stop read thread 1102788928 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.10system 0:12.19elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 8inputs+7008outputs (0major+216minor)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 0:00.06elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+56outputs (0major+114minor)pagefaults 0swaps 0.00user 0.11system 0:07.62elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.13user 1.14system 0:02.61elapsed 49%CPU (0avgtext+0avgdata 0maxresident)k 2688inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.11user 1.05system 0:02.60elapsed 44%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.13user 1.01system 0:03.02elapsed 37%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.12user 1.12system 0:02.61elapsed 47%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.00user 0.12system 0:06.94elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+128000outputs (0major+135minor)pagefaults 0swaps 0.68user 1.68system 0:14.48elapsed 16%CPU (0avgtext+0avgdata 0maxresident)k 127968inputs+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 1.39system 2:32.66elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+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... 2.27user 20.83system 1:07.59elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k 720896inputs+5242968outputs (0major+164412minor)pagefaults 0swaps 0.00user 0.91system 0:02.69elapsed 33%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.16user 10.00system 0:11.19elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.00elapsed 200%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.19elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.12elapsed 6%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps