trying 2000 iterations read thread 1106774336 start write thread 1115167040 start write thread 1115167040 stop read thread 1106774336 stop Pass: all stats after completion of extending writes saw the new size Command exited with non-zero status 2 0.00user 0.15system 0:12.14elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 64inputs+7008outputs (0major+236minor)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 4%CPU (0avgtext+0avgdata 0maxresident)k 56inputs+56outputs (0major+125minor)pagefaults 0swaps 0.00user 0.11system 0:07.00elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+406minor)pagefaults 0swaps 0.11user 1.38system 0:02.33elapsed 63%CPU (0avgtext+0avgdata 0maxresident)k 2728inputs+207360outputs (1599major+24417minor)pagefaults 0swaps 0.12user 1.43system 0:02.10elapsed 74%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.11user 1.43system 0:02.41elapsed 64%CPU (0avgtext+0avgdata 0maxresident)k 2560inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.13user 1.41system 0:02.14elapsed 72%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+207360outputs (1599major+24418minor)pagefaults 0swaps 0.00user 0.10system 0:07.09elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+128000outputs (0major+145minor)pagefaults 0swaps 3.32user 3.24system 0:15.86elapsed 41%CPU (0avgtext+0avgdata 0maxresident)k 325632inputs+409600outputs (1599major+24197minor)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 1.67system 2:21.84elapsed 1%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+2560008outputs (0major+483minor)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... 2.21user 28.45system 0:59.62elapsed 51%CPU (0avgtext+0avgdata 0maxresident)k 24inputs+5242968outputs (0major+164457minor)pagefaults 0swaps 0.00user 1.29system 0:02.49elapsed 52%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+192000outputs (0major+126minor)pagefaults 0swaps read_checkzero done 1.40user 10.25system 0:11.71elapsed 99%CPU (0avgtext+0avgdata 0maxresident)k 16inputs+8outputs (0major+107minor)pagefaults 0swaps 0.00user 0.00system 0:00.03elapsed 20%CPU (0avgtext+0avgdata 0maxresident)k 32inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.20elapsed 3%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+784outputs (0major+252minor)pagefaults 0swaps 0.00user 0.00system 0:00.13elapsed 2%CPU (0avgtext+0avgdata 0maxresident)k 789inputs+792outputs (0major+252minor)pagefaults 0swaps