trying 2000 iterations read thread 1092528448 start write thread 1104058688 start write thread 1104058688 stop read thread 1092528448 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.11system 0:12.14elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 96inputs+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 0:00.08elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k 64inputs+56outputs (0major+113minor)pagefaults 0swaps 0.00user 0.08system 0:08.12elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+396minor)pagefaults 0swaps 0.09user 1.04system 0:02.79elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k 2728inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.13user 0.99system 0:02.78elapsed 40%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.10user 1.08system 0:03.42elapsed 34%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24405minor)pagefaults 0swaps 0.12user 1.07system 0:02.81elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24404minor)pagefaults 0swaps 0.00user 0.10system 0:08.15elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+128000outputs (0major+136minor)pagefaults 0swaps 5.13user 3.15system 0:19.55elapsed 42%CPU (0avgtext+0avgdata 0maxresident)k 321288inputs+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 0.01user 1.98system 2:44.74elapsed 1%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... 2.37user 21.56system 1:12.05elapsed 33%CPU (0avgtext+0avgdata 0maxresident)k 196640inputs+5242968outputs (0major+164404minor)pagefaults 0swaps 0.00user 0.98system 0:03.39elapsed 29%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+192000outputs (0major+113minor)pagefaults 0swaps read_checkzero done 1.99user 26.80system 0:28.86elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+96minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 13%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+239minor)pagefaults 0swaps 0.00user 0.00system 0:00.18elapsed 4%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+240minor)pagefaults 0swaps 0.00user 0.00system 0:00.22elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+240minor)pagefaults 0swaps